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Fungi imperfecti Stock Photos and Images
RMT697KD–Photomicrograph of the mold Corynespora cassiicola of the group Fungi Imperfecti, 1972. Image courtesy Centers for Disease Control and Prevention (CDC) / Dr Libero Ajello. ()
RFHJ0BDY–Coloured scanning electron micrograph (SEM) of Mould, hyphae, conidiophores (fruiting structures) and conidium (asexual spore) formation (Penicillium sp.;likely Penicillum candidum). Penicillium candidum is used to develop many soft-ripened cheeses such as Brie. Antibiotic penicillins are synthesized from strains of this genus. Magnification: x275 when shortest axis printed at 25 millimetres.
RMPG40HB–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 514 FUNGI IMPERFECTI. sugar beet and beet-root. It is easily recognized by the numerous sharply defined spots produced on the leaves. The conidia are very long and pluriseptate. In the United States this is one of the most serious of beet diseases.-' As preventive treatment, great care should be taken to destroy aU infected material. A long rotation should also prove a good remedy.. Fig. 314.—Ccrcospora acti-ina. 2,
RM2AN3K65–Danish fungi as represented in the herbarium of ERostrup . astri, piniaustriaca and exiguum are the conidial stages of species of Hysteriineae. There are also accounts of the relations of a number of species tosome quite different forms of fungi imperfecti, viz: Lophium mytilinum corresp. Phragmotrichum Chailletii (see Tul. Carp. II 9).Hypodermella nervisequia — Septoria pini (see Lindau 08^^).Hypodermella sulcigena — Hendersonia acicola (Tub. &. Lager- berg 10^^°).Lophodermium melaleucum — Phoma leptidea (see Vleugel 11 ^*^). Hypodermella. 523. Hypodermella nervisequia (Fries) Lagerberg 10 ^^
RM2HK7JEB–Leicestershire January 2022: Nature fungi winters day macro photography, 100,000 species of Fungi /mushrooms :Clifford Norton
RM2F3F06D–Radiotrophic fungi, can use radiation as an energy source to stimulate growth. Most radiotrophic fungi use melanin to survive. 1 Acanthostaurus purpurascens. 2 Amphibelone anomala. 3 Dyctiosoma trigonizon. 4 Dorataspis polyancistra. 5 Diploconus fasces. 6 Cladosporium sphaerospermum. 7 Arachnocorys circumtexta. Old 19th century color lithography illustration from El Mundo Ilustrado 1879
RMW9GYPN–Archive image from page 427 of Current bibliography for fisheries science. Current bibliography for fisheries science currentbibliogra116food Year: 1958 ( 8,83 ITIDULARIALES 8,91 'FUÏTGI IMPERFECTI' 8,92 8,93 8; 94 8,95 PHOMLES MSLANCObTIALES MONILIALES îffCELIA STEKILIA 8,9b VIRUSES 8,97 'AQUATIC PUUGIi FUNGI Шй VIRUSES PARASITIC IN AQUATIC ORGAIÎISMS' 8,99 mSCELLAKEOUS PAO/58/9/6635 1 (6);Suppl.24
RMMAB5PR–. Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz . Naemosphaera tabacina (Berlese). a. Sechs schwach vergrösserte Frucht- gehäuse. b. Sehr stark vergrösserte Sporen. Nach Saccardo in Dr. G. Lindau, Fungi imperfecti, p. 363 in Engler's Natürl. Pflanzenfamilien.
![. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. FUNGI IMPERFECTI 311 as in a moist" chamber, the length mentioned may be considerably exceeded. After the death of a leaf, spores may be produced over the entire surface. Spores found upon old leaves in the field five months after the beets were harvested were able to germinate. The fresh spores germinate readily in ordinary nutrient media, and pure cultures may be obtained by the poured plate method. After a growth of a few days the colonies show up well. The sub- merged myce Stock Photo](https://c8.alamy.com/comp/PG3YDB/fungous-diseases-of-plants-with-chapters-on-physiology-culture-methods-and-technique-fungi-in-agriculture-fungi-imperfecti-311-as-in-a-moistquot-chamber-the-length-mentioned-may-be-considerably-exceeded-after-the-death-of-a-leaf-spores-may-be-produced-over-the-entire-surface-spores-found-upon-old-leaves-in-the-field-five-months-after-the-beets-were-harvested-were-able-to-germinate-the-fresh-spores-germinate-readily-in-ordinary-nutrient-media-and-pure-cultures-may-be-obtained-by-the-poured-plate-method-after-a-growth-of-a-few-days-the-colonies-show-up-well-the-sub-merged-myce-PG3YDB.jpg ". Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. FUNGI IMPERFECTI 311 as in a moist" chamber, the length mentioned may be considerably exceeded. After the death of a leaf, spores may be produced over the entire surface. Spores found upon old leaves in the field five months after the beets were harvested were able to germinate. The fresh spores germinate readily in ordinary nutrient media, and pure cultures may be obtained by the poured plate method. After a growth of a few days the colonies show up well. The sub- merged myce Stock Photo")
RMPG3YDB–. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. FUNGI IMPERFECTI 311 as in a moist" chamber, the length mentioned may be considerably exceeded. After the death of a leaf, spores may be produced over the entire surface. Spores found upon old leaves in the field five months after the beets were harvested were able to germinate. The fresh spores germinate readily in ordinary nutrient media, and pure cultures may be obtained by the poured plate method. After a growth of a few days the colonies show up well. The sub- merged myce
RM2AJ58DE–Fungous diseases of plants . may show leaf blight to aconsiderable extent, adjacent plots of budded plants may be seri-ously injured by the leaf spot. The budded stock of the secondyear usually suffers more severely, particularly since it is generallyless cultivated after the first season. In the state of New Yorkmost of the standard varieties may be attacked. Bosc, Anjou,Clairgeau, Seckel, Bartlett, etc., may be considerably injured, butFlemish Beauty, Duchess, and Winter Nellis are more resistant. FUNGI IMPERFECTI 159 The Kieffer is practically exempt. In any case, however, thefungus may be
RM2HK7JGN–Leicestershire January 2022: Nature fungi winters day macro photography, 100,000 species of Fungi /mushrooms :Clifford Norton
RMRYCA3H–Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz drlrabenhorstskr0107rabe Year: 1903 Naemosphaera tabacina (Berlese). a. Sechs schwach vergrösserte Frucht- gehäuse. b. Sehr stark vergrösserte Sporen. Nach Saccardo in Dr. G. Lindau, Fungi imperfecti, p. 363 in Engler's Natürl. Pflanzenfamilien.
RMMAB5PG–. Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz . Discomycopsis rhytismoides Jul. Müller. a. Ein Ahornblatt mit dem Pilze in natürlicher Grösse. b. Sehr stark vergrösserte Sporen. Nach Jul. Müller in G. Lindau, Fungi imperfecti der Natürlichen Pflanzenfamilien.
RMRCC3A9–. Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae. Plant diseases; Parasitic plants; Fungi. >u FUNGI IMPERFECTI. sugar beet and beet-root. It is easily recognized by the numerous sharply defined spots produced on the leaves. The conidia are very long and pluriseptate. In the United States this is one of the most serious of beet diseases.^ As preventive treatment, great care should be taken to destroy all infected material. A long rotation should also prove a good remedy.. Fig. 314.—Ctrcospora acerina. 2,
RM2HK7JJD–Leicestershire January 2022: Nature fungi winters day macro photography, 100,000 species of Fungi /mushrooms :Clifford Norton
RMPG4ANJ–. Botany for agricultural students . Botany. 404 THALLOPHYTES. Fungi Imperfecti (Imperfect Fungi) All Fungi in which the features characteristic of the Phycomy- cetes, Ascomycetes, or Basidiomycetes have not been discovered in their life histories are classed as imperfect Fungi. It is a heterogenous group, containing numerous Fungi varying widely in characteristics. Investigators think that most of them are the conidial stages of Ascomycetes in which the Ascogenous ^ stage has been abandoned or has not been discovered. Careful investiga- tions have already discovered that a number of Fungi whi
![. Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz . Sphaeropsis Mori Berlese. a. Ein stark vergrössertes,^ senkrecht durchschnittenes Fruchtgehäuse."=. b. Sehr stark vergrösserte Sporen und Sporenträger. Nach Saccardo in G. Lindau, Fungi imperfecti, p. 363 in Engler, Natür- liche Pflanzenfamilien. Stock Photo](https://c8.alamy.com/comp/MAB5R3/dr-l-rabenhorsts-kryptogamen-flora-von-deutschland-oesterreich-und-der-schweiz-sphaeropsis-mori-berlese-a-ein-stark-vergrssertes-senkrecht-durchschnittenes-fruchtgehusequot=-b-sehr-stark-vergrsserte-sporen-und-sporentrger-nach-saccardo-in-g-lindau-fungi-imperfecti-p-363-in-engler-natr-liche-pflanzenfamilien-MAB5R3.jpg ". Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz . Sphaeropsis Mori Berlese. a. Ein stark vergrössertes,^ senkrecht durchschnittenes Fruchtgehäuse."=. b. Sehr stark vergrösserte Sporen und Sporenträger. Nach Saccardo in G. Lindau, Fungi imperfecti, p. 363 in Engler, Natür- liche Pflanzenfamilien. Stock Photo")
RMMAB5R3–. Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz . Sphaeropsis Mori Berlese. a. Ein stark vergrössertes,^ senkrecht durchschnittenes Fruchtgehäuse."=. b. Sehr stark vergrösserte Sporen und Sporenträger. Nach Saccardo in G. Lindau, Fungi imperfecti, p. 363 in Engler, Natür- liche Pflanzenfamilien.
RMT1HYRD–Diseases of plants induced by Diseases of plants induced by cryptogamuc parasites; introduction to the study of pathogenic fungi, slime-fungi, bacteria, and algae. English ed. by William G. Smith diseasesofplants00tubeuoft Year: 1897 476 FUNGI IMPERFECTI. of the shoots, and either rupture the epiderinis or grow out from the leaf-scar cushions (Fig. 297). The conidia are abjointed from filamentous conidiophores inside the pycnidia, and emerge as tendril-like structures. They are two-celled, small, cylindrical, and pointed at both ends. Germination takes place easily in water, and the disease
RM2AJ5D0D–Fungous diseases of plants . Fig. 152. China Aster affected byFusarium FUNGI IMPERFECTI 321 study of the disease does notappear to have been reported.The carnation stem wilt/-^or rosette, is occasionallyimportant both in thegreenhouse and garden. Asin the case of the cottonwilt and other similar dis-eases, the fungus seems togain entrance through theroot system, and its pathof attack is mainly thetracheal tissues. Steriliza-tion of the soil seems tobe the only effective meansof prevention.. Fig. 153. FusARiuM on Carnation RosKTTE Effect (Photograph by Geo. F. Atkinson) XXV. ROOT ROT OF THE VIN
RM2HK7JG5–Leicestershire January 2022: Nature fungi winters day macro photography, 100,000 species of Fungi /mushrooms :Clifford Norton
RMPG3P0B–. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. FUNGI IMPERFECTI 331 such cross-inoculation experiments as have been made indicate that many species, at least, are not closely restricted as to hosts, and one form might be the cause of disease in a variety of plants. It has seemed to be a group which would well reward comparative study in artificial culture, and advantage has been taken of this by Stoneman,1 Edgerton,1 and others. With particular reference to species of one type, those which may represent stages of the pyrenomyce
RMMAB5PC–. Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz . Haplosporella Francisci Dom. Sacc. a. Ein senkrecht durchschnit- tenes, vergrössertes Stroma mit drei Kammern. b. Zwei sehr stark vergrösserte Sporen auf den Sporenträgern. Nach Saccardo in Gr. Lindau, Fungi imperfecti in Engler's Natürl. Pflanzenfamilien, p. 365.
RMT1JJ6F–Diseases of plants induced by Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae diseasesofplant00tube Year: 1897 498 FUNGI IMPERFECTI. exhibit reddish or yellow spots; therein the mycelium spreads rapidly and gives off tufts of conidiophores which rupture the epidermis. The conidiophores are septate, branched, and give off chains of unicellular oval conidia. Meanwhile the affected fruit becomes rotten and gradually shrivels up, it remains, however, hanging on the tree throughout the winter. During
RM2ANAF8J–A text-book of mycology and plant pathology . arium batatalis and B.F. hyperoxysporum, X500. (After Harler, L. L., U. S. Farmers Bull. 714, March 11,1916.) same medium under conditions otherwise identic, ^ollenweber andAppeP have published a monograph of Fusarium and later Wollen-weber has studied the Fusarium problem and similar studies shouldbe made of each one of the form genera of the Fungi Imperfecti.The genus Fusarium is divisible into sections not only by physiologiccharacters (pS.thogenicity) but also by morphologic characters (coni-diospores, chlamydospores). The section, Elegans, com
RM2HK7JG9–Leicestershire January 2022: Nature fungi winters day macro photography, 100,000 species of Fungi /mushrooms :Clifford Norton
RMPG3NY1–. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. FUNGI IMPERFECTI 347 Phyllosticta maculicola Hals.1 is the cause of a very common leaf spot of several species of Dracaena and Cordyline. The spots are characterized by pale centers an'd reddish or purplish borders. The disease is sometimes severe in greenhouses where it has long been allowed to proceed unchecked. It is, however, readily pre- vented by spraying with potassium sulfide solution. Phyllosticta Ampelopsidis Ell. & Mart, is perhaps closely related to the fungus causi
![. Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz . Trichodytes Anemones Klebahn. a. Ein krankes Anemonenblatt in natürlicher Grösse. b. Ein sehr stark vergrössertes Drüsenhaar mit wenigen Mycelhyphen des Pilzes. c. Ein sehr stark vergrössertes Drüsenhaar mit dem Sporen- lager an der Spitze. d. Sehr stark vergrösserte Sporenträger mit Sporen. Nach Klebahn in Dr. G. Lindau, Fungi imperfecti, Figur 216 E—K in Dr. Engler's „Natürl. Pflanzenfamilien". Winter, die Pilze. VII. Abth. 46 Stock Photo](https://c8.alamy.com/comp/MAB585/dr-l-rabenhorsts-kryptogamen-flora-von-deutschland-oesterreich-und-der-schweiz-trichodytes-anemones-klebahn-a-ein-krankes-anemonenblatt-in-natrlicher-grsse-b-ein-sehr-stark-vergrssertes-drsenhaar-mit-wenigen-mycelhyphen-des-pilzes-c-ein-sehr-stark-vergrssertes-drsenhaar-mit-dem-sporen-lager-an-der-spitze-d-sehr-stark-vergrsserte-sporentrger-mit-sporen-nach-klebahn-in-dr-g-lindau-fungi-imperfecti-figur-216-ek-in-dr-englers-natrl-pflanzenfamilienquot-winter-die-pilze-vii-abth-46-MAB585.jpg ". Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz . Trichodytes Anemones Klebahn. a. Ein krankes Anemonenblatt in natürlicher Grösse. b. Ein sehr stark vergrössertes Drüsenhaar mit wenigen Mycelhyphen des Pilzes. c. Ein sehr stark vergrössertes Drüsenhaar mit dem Sporen- lager an der Spitze. d. Sehr stark vergrösserte Sporenträger mit Sporen. Nach Klebahn in Dr. G. Lindau, Fungi imperfecti, Figur 216 E—K in Dr. Engler's „Natürl. Pflanzenfamilien". Winter, die Pilze. VII. Abth. 46 Stock Photo")
RMMAB585–. Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz . Trichodytes Anemones Klebahn. a. Ein krankes Anemonenblatt in natürlicher Grösse. b. Ein sehr stark vergrössertes Drüsenhaar mit wenigen Mycelhyphen des Pilzes. c. Ein sehr stark vergrössertes Drüsenhaar mit dem Sporen- lager an der Spitze. d. Sehr stark vergrösserte Sporenträger mit Sporen. Nach Klebahn in Dr. G. Lindau, Fungi imperfecti, Figur 216 E—K in Dr. Engler's „Natürl. Pflanzenfamilien". Winter, die Pilze. VII. Abth. 46
RMT1HYFP–Diseases of plants induced by Diseases of plants induced by cryptogamuc parasites; introduction to the study of pathogenic fungi, slime-fungi, bacteria, and algae. English ed. by William G. Smith diseasesofplants00tubeuoft Year: 1897 466 FUNGI IMPERFECTI. stricted tissue will be found extending quite round the twig (Fig. 293), At these places the bark and cambium have been killed, whereas the higher portions of the twig have continued to increase in thickness. Numerous small black pycnidia break out on the bark of diseased places and give off small unicellular spindle-shaped conidia, which c
RM2AJ5FT6–Fungous diseases of plants . erfect orwinter stage has been discovered for the fungus, but the fact thatthe spores will germinate after remaining in the laboratory dry forthree months indicates that the conidia of the fungus are prob-ably carried over winter on the mulch or debris on the beds. Itgrows very readily as a saprophyte, and may pass the wintergrowing on the dead stems and mulch on the bed. The fungusmakes its first appearance on the stems early in the spring, shortlyafter they are up, but the disease does not become destructive 1 FUNGI IMPERFECTI 307 usually before the middle or lat
RM2HK7JFN–Leicestershire January 2022: Nature fungi winters day macro photography, 100,000 species of Fungi /mushrooms :Clifford Norton
RM2HK7JAJ–Leicestershire January 2022: Nature fungi winters day macro photography, 100,000 species of Fungi /mushrooms :Clifford Norton
![. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. FUNGI IMPERFECTI 305 XVI. BLIGHT OF GINSENG1 Alternaria Panax Whetzel Occurrence and symptoms. The so-called "blight" is the most common and destructive disease of cultivated ginseng. It occurs. I ; I Fig. 138. Blight of Ginseng: Frequent Forms of the Disease (Photograph by H. H. Whetzel) apparently throughout the eastern United States wherever ginseng is grown, but has not been with certainty reported west of the Mississippi. The disease is caused by Alternaria Panax Whe Stock Photo](https://c8.alamy.com/comp/PG3YE6/fungous-diseases-of-plants-with-chapters-on-physiology-culture-methods-and-technique-fungi-in-agriculture-fungi-imperfecti-305-xvi-blight-of-ginseng1-alternaria-panax-whetzel-occurrence-and-symptoms-the-so-called-quotblightquot-is-the-most-common-and-destructive-disease-of-cultivated-ginseng-it-occurs-i-i-fig-138-blight-of-ginseng-frequent-forms-of-the-disease-photograph-by-h-h-whetzel-apparently-throughout-the-eastern-united-states-wherever-ginseng-is-grown-but-has-not-been-with-certainty-reported-west-of-the-mississippi-the-disease-is-caused-by-alternaria-panax-whe-PG3YE6.jpg ". Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. FUNGI IMPERFECTI 305 XVI. BLIGHT OF GINSENG1 Alternaria Panax Whetzel Occurrence and symptoms. The so-called "blight" is the most common and destructive disease of cultivated ginseng. It occurs. I ; I Fig. 138. Blight of Ginseng: Frequent Forms of the Disease (Photograph by H. H. Whetzel) apparently throughout the eastern United States wherever ginseng is grown, but has not been with certainty reported west of the Mississippi. The disease is caused by Alternaria Panax Whe Stock Photo")
RMPG3YE6–. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. FUNGI IMPERFECTI 305 XVI. BLIGHT OF GINSENG1 Alternaria Panax Whetzel Occurrence and symptoms. The so-called "blight" is the most common and destructive disease of cultivated ginseng. It occurs. I ; I Fig. 138. Blight of Ginseng: Frequent Forms of the Disease (Photograph by H. H. Whetzel) apparently throughout the eastern United States wherever ginseng is grown, but has not been with certainty reported west of the Mississippi. The disease is caused by Alternaria Panax Whe
RMT1HE2J–Diseases of plants induced by Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae diseasesofplant00tube Year: 1897 PHYTOPHTHORA. 119 Another parasite of conifer seedlings—Fasoma imrasiticum— which somewhat resembles Phytophtlwra, is figured and described amongst the ' Fungi imperfecti.' Phytophthora infestans, De Bary. This parasite was first observed in Europe in 1845, and has since then become Fio. 29. Fic. 30. Fio. 29.—Celhilav tissue from diseased cotyledon of Beech. The starch-gi-ains have been absorbed fr
RMMCRB8G–. A riivHosticta tabifica: !pi)= fiübe, ftarl oergi-öpert, bie Sporen enttaffcnb; 1 neu o6en; 2 im SQngäi(^nitt. B Diplodia lierbarom: 1 ^-y; fniben auf einem gtcngelflücf; 2 einiclne '4-'9'''it)e, v&c gtöpert; 3 im i'ängSfc^mtt, [tarf oergrögert. C Septoria Montemartinii: 1 ^i)tnbe, flaif oergrö|ert; 2 Spore, noc§ ftörfer Dcrgrö^crt. 6: ItnboIIftänbig Ijefannte $iläe (Fungi imperfecti), o D Gloeosporium Lindemu- thianum: 1 Söo^nc, »on bem ipu^ Befallen; 2 fionibieniager. E Pestalozzia Hartigii: 1 S3u(^enEeimltn3 mit Cinfc^nü^ rung; 2 Zeit be§ Sporen= lagere!; 3 Spore; 4 Spore oon P. fun
RM2AJ5E66–Fungous diseases of plants . Fu;. 147. Cercosporacircumscissa: Spots onAlmond. (After Pierce) FUNGI IMPERFECTI 315 Padi, but it is important as an almond tree disease^ in Californiaand elsewhere. Cercospora Nicotianae . & E. The more commonly observedleaf spot or frog eye of the tobacco has been reported from manytobacco-growing regions, but does not appear to be a disease of. Fig. 148. Cercospora c/rcua/sc/ss.i. (After Pierce)a, tuberculate stroma; /, conidiophores and conidia any great importance, and doubtless many different fungi are con-cerned in the production of spots more or less sim
RM2HK7JA4–Leicestershire January 2022: Nature fungi winters day macro photography, 100,000 species of Fungi /mushrooms :Clifford Norton
RMPG3YF2–. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. FUNGI IMPERFECTI 295 therefore concerns itself primarily with a maintenance of condi- tions as dry and cool as is compatible with satisfactory growth, and also with matters of general sanitation, such as proper ven- tilation, destruction of diseased parts, and all defective specimens, leaves, and other refuse. Affected buds should also be picked off and burned. Susceptible varieties should not be grown where the disease prevails. VI. A PINK ROT FOLLOWING APPLE SCAB Cephalotherium r
RMT1JJ31–Diseases of plants induced by Diseases of plants induced by cryptogamuc parasites; introduction to the study of pathogenic fungi, slime-fungi, bacteria, and algae. English ed. by William G. Smith diseasesofplants00tubeuoft Year: 1897 488 FUNGI IMPERFECTI. Faded spots appear on the leaves, becoming later greyish brown dotted over with minute black points, the conidial patches. C. ampelinum Cav. causes little dry spots on the leaves of vine, fie- quentjy in such numbers that the whole leaf dries up. C. kentiae Hals, attacks palm-seedlings so that their leaves do not unfold. C. cyclameneae Hals
RM2AJ5JG5–Fungous diseases of plants . The Potato Scab. Conn. Agl. Exp. Sta. (1890):81-95. Thaxter, Roland. The Potato Scab. Conn. Agl. Exp. Sta. (1S91): 153-160. The scab of potatoes is a disease which is well known to grow-ers, dealers, and consumers alike, for the conspicuous scab pits orspots on the surface of tubers cannot fail to strike the attention. 1 A FUNGI IMPERFECTI 291 The disease is most common throughout the United States, anddoubtless throughout the potato-producing regions of Europe aswell. It is not positively demonstrated, however, that all of thesurface injuries known as scab are pro
RM2HK7JAB–Leicestershire January 2022: Nature fungi winters day macro photography, 100,000 species of Fungi /mushrooms :Clifford Norton
RMPG3P14–. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. FUNGI IMPERFECTI 321 study of the disease does not appear to have been reported. The carnation stem wilt,1,2 or rosette, is occasionally important both in the greenhouse and garden. As in the case of the cotton wilt and other similar dis- eases, the fungus seems to gain entrance through the root system, and its path of attack is mainly the tracheal tissues. Steriliza- tion of the soil seems to be the only effective means of prevention.. Fig. 153. Fusarium on Carnation: Rosette Effe
RMRYEGD1–Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz drlrabenhorstskr0107rabe Year: 1903 Sphaeropsis Mori Berlese. a. Ein stark vergrössertes,^ senkrecht durchschnittenes Fruchtgehäuse.'=. b. Sehr stark vergrösserte Sporen und Sporenträger. Nach Saccardo in G. Lindau, Fungi imperfecti, p. 363 in Engler, Natür- liche Pflanzenfamilien. Sphaeropsis Yisci (Sollm.) Sacc. a. Ein Zweig von Viscum album mit dem Pilze in natürlicher Grösse. b. Senkrechter Durchschnitt durch ein Fruchtgehäuse in derEinde eines Zweiges. c. Senkrechter Schnitt durch die Basis eines Fruch
RM2AJ5BNK–Fungous diseases of plants . is, however, a disease which may cause great injurywhen it becomes epidemic, particularly in view of the fact that itis not so readily treated. The disease occurs upon berries, shoots, and leaves, but is far morecommon upon shoots and berries. Upon the latter the well-known 1 Edgerton. Bot. Gaz. 46, /. c. 2 Hasselbring, H. H. The Appressoria of the Anthracnoses. Bot. Gaz. 42:135-142. figs. 1-7. 1906. FUNGI IMPERFECTI 333 birds-eye spots, or effects, are produced. At first ashen-brownspots appear, and as these enlarge in a more or less regular man-ner the central po
RMPG3NTP–. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. FUNGI IMPERFECTI 363 Septoria Ribis Desm.1 is common upon various species of Ribes. With respect to the economic hosts many varieties of both currants and gooseberries are subject to attack. Large spots with pale centers and brown borders are produced (Fig. 181). These are readily distinguished from those produced by the anthracnose (cf. Fig. 79) by the large size, the well-defined outline, and the pale central dead area. The pycnidia are found in small groups at the centers of the
RMRYEHN1–Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz drlrabenhorstskr0107rabe Year: 1903 Haplosporella Francisci Dom. Sacc. a. Ein senkrecht durchschnit- tenes, vergrössertes Stroma mit drei Kammern. b. Zwei sehr stark vergrösserte Sporen auf den Sporenträgern. Nach Saccardo in Gr. Lindau, Fungi imperfecti in Engler's Natürl. Pflanzenfamilien, p. 365. Discomycopsis rhytismoides Jul. Müller. a. Ein Ahornblatt mit dem Pilze in natürlicher Grösse. b. Sehr stark vergrösserte Sporen. Nach Jul. Müller in G. Lindau, Fungi imperfecti der Natürlichen Pflanzenfamilien.
RM2AJ5EX2–Fungous diseases of plants . Fig. 143. Cercospor.-i Beticola:Conidiophores and Conidia FUNGI IMPERFECTI I I as in a moist chamber, the length mentioned may be considerablyexceeded. After the death of a leaf, spores may be produced overthe entire surface. Spores found upon old leaves in the field fivemonths after the beets were harvested were able to germinate. The fresh spores germinate readily in ordinary nutrient media,and pure cultures may be obtained by the poured plate method.After a growth of a few days the colonies show up well. The sub-merged mycelium develops in agar as a dense olivac
RMPG3TXF–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 476 FUNGI IMPERFECTI. of the shoots, aud either rupture the epidermis or grow out from the leaf-scar cushions (Fig. 297). The couidia are abjointed from filamentous conidiophores inside the pycnidia, and emerge as tendril-like structures. They are two-celled, small, cylindrical, and pointed at both ends. Germination takes place easily in water, and the disease spreads rapidly over the young developing shoots during
RMT0W92K–Dr L Rabenhorst's Kryptogamen-Flora von Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz drlrabenhorstskr0107rabe Year: 1903 721 Trichodytes Anemones Klebahn. a. Ein krankes Anemonenblatt in natürlicher Grösse. b. Ein sehr stark vergrössertes Drüsenhaar mit wenigen Mycelhyphen des Pilzes. c. Ein sehr stark vergrössertes Drüsenhaar mit dem Sporen- lager an der Spitze. d. Sehr stark vergrösserte Sporenträger mit Sporen. Nach Klebahn in Dr. G. Lindau, Fungi imperfecti, Figur 216 E—K in Dr. Engler's „Natürl. Pflanzenfamilien'. Winter, die Pilze. VII. Abth. 46
RM2AN369A–Handbuch der Pflanzenkrankheiten . Fig. 56. Durch Pestalozsia fuscescetis Sor. erkrankte Corypha- Pflänzchen. (Nach Sorauek.) ^) Landwirtsch. Jahrb. 1887. -) Handbuch der Pflanzenkraukheiten. 2. Aufl. II, 399. 3) Waonkh, f., u. P. SoRAiKu, Die Pestalozzia-Ivrankheit der Lupinen in Zeit-schrift f. Pflauzenkrankh. VIII, 266. 432 III. E. Fungi imperfecti. zum Absterben brachten. Wenn die Pflanzen erst eine gewisse Gröfseerlangt hatten, so wurden zwar die unteren Blätter noch infiziert, aberdie Erkrankung tat der Fruchtbildung keinen wesentlichen Abbruch.Der Ausbruch der Erkrankung war besonders d
RMPG44R0–. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. FUNGI IMPERFECTI (dEUTEROMYCETES) 267 fungus which causes leaf spot of beets, Cercospora beticola. The form genus Fusarium (Fig. 109), established by Link in 1809, is one which has come into prominence recently as associated with the production of serious plant diseases. At least eleven species are found on the sweet potato (Fig. 108), and these have been investigated by H. W. WoUenweber' and other mycologists. He finds that the genus has a number of vegetative and spore stages the vari
RM2CDCCPE–. Fungous diseases of plants, with chapters on physiology, culture methods and technique . Fig. 129. Sporotrichum PoAi: ConidiophoresAND Conidia FUNGI IMPERFECTI 295 therefore concerns itself primarily with a maintenance of condi-tions as dry and cool as is compatible with satisfactory growth,and also with matters of general sanitation, such as proper ven-tilation, destruction of diseased parts, and all defective specimens,leaves, and other refuse. Affected buds should also be pickedoff and burned. Susceptible varieties should not be grown wherethe disease prevails. VI. A PINK ROT FOLLOWING AP
![. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. PHYTOPHTHORA. 119 Another parasite of conifer seedlings—Fusoma parasitictmi— which somewhat resembles Phytophtlwra, is figured and described amongst the " Fungi imperfecti." Phytophthora infestans, De Bary.^ This parasite was first observed in Europe in 1845, and has since then become. Fig. so. Fig. 29.—Celhilav tissue from diseased cotyledon of Beech. The starch-grains have been absorbed from the cell-pro Stock Photo](https://c8.alamy.com/comp/PG0R6N/diseases-of-plants-induced-by-cryptogamic-parasites-introduction-to-the-study-of-pathogenic-fungi-slime-fungi-bacteria-amp-algae-plant-diseases-parasitic-plants-fungi-phytophthora-119-another-parasite-of-conifer-seedlingsfusoma-parasitictmi-which-somewhat-resembles-phytophtlwra-is-figured-and-described-amongst-the-quot-fungi-imperfectiquot-phytophthora-infestans-de-bary-this-parasite-was-first-observed-in-europe-in-1845-and-has-since-then-become-fig-so-fig-29celhilav-tissue-from-diseased-cotyledon-of-beech-the-starch-grains-have-been-absorbed-from-the-cell-pro-PG0R6N.jpg ". Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. PHYTOPHTHORA. 119 Another parasite of conifer seedlings—Fusoma parasitictmi— which somewhat resembles Phytophtlwra, is figured and described amongst the " Fungi imperfecti." Phytophthora infestans, De Bary.^ This parasite was first observed in Europe in 1845, and has since then become. Fig. so. Fig. 29.—Celhilav tissue from diseased cotyledon of Beech. The starch-grains have been absorbed from the cell-pro Stock Photo")
RMPG0R6N–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. PHYTOPHTHORA. 119 Another parasite of conifer seedlings—Fusoma parasitictmi— which somewhat resembles Phytophtlwra, is figured and described amongst the " Fungi imperfecti." Phytophthora infestans, De Bary.^ This parasite was first observed in Europe in 1845, and has since then become. Fig. so. Fig. 29.—Celhilav tissue from diseased cotyledon of Beech. The starch-grains have been absorbed from the cell-pro
RM2CDCCC7–. Fungous diseases of plants, with chapters on physiology, culture methods and technique . Fig. 147. Cercosporacircumscissa: Spots onAlmond. (After Pierce) FUNGI IMPERFECTI 315 Padi, but it is important as an almond tree disease^ in Californiaand elsewhere. Cercospora Nicotianae E. & E. The more commonly observedleaf spot or frog eye of the tobacco has been reported from manytobacco-growing regions, but does not appear to be a disease of. Fig. 148. Cercospora circumscissa. (After Fierce)a, tuberculate stroma; b^ conidiophores and conidia any great importance, and doubtless many different fungi
RMPG3T57–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 498 FUNGI IMPERFECTI. exhibit reddish or yellow spots; therein the mycelium spreads rapidly and gives off tufts of eonidiophores which rupture the epidermis. The eonidiophores are septate, branched, and give off chains of unicellular oval conidia. Meanwhile the affected fruit becomes rotten and gradually shrivels up, it remains, however, hanging on the tree throughout the winter. During. Please note that these image
RM2CDCC0R–. Fungous diseases of plants, with chapters on physiology, culture methods and technique . Fig. 164. Cylindrosporium Padia, section of acervulus ; b, conidia, some germinating FUNGI IMPERFECTI 341 48-60 X 2/x. They germinate readily, and evidently require but afew days incubation after infection for the production of the char-acteristic shot-holes upon susceptible hosts. No ascogenous stage of this fungus is known, and there is somedoubt as to the ordinary method of wintering over. Stewart, how-ever, has found the pustules of this fungus on the twigs of cherry,and it is quite probable that thi
RMPG40XN–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 504 FUNGI IMPERFECTI. Mastigosporinm. Conidia hyaline and four-celled, frequently bristled. Mastigosporium album Eiess. produces oblong dark spots with light margins on leaves of living grass. The conidia are produced on the margins of the spots (Fig. 308). Fusoma. Similar to Fusarium, but the mycelium is loose and not aggregated into a tuft. Conidia spindle-shaped and septate.. Fig. 309.—Fusoma parasiticum. Dis- ea
RM2CDCBEX–. Fungous diseases of plants, with chapters on physiology, culture methods and technique . Fig. 185. Entomosporium maculatum. Fig. 186. Spores of the FUNGI IMPERFECTI 367 fully as a preventive. Five or moresprayings have been profitable uponAmerican, French, and Japanesestocks, although this has not affordedcomplete protection. Spraying as forthe pear scab is advised when thisdisease becomes a matter of suffi-cient economic importance in theorchard. Entomosporium LIV. SOOTY BLOTCH AND FLY SPECK OF THE APPLE AND OTHER PLANTS! Leptothyrium Fo7tii (Mont. & Fr.) Sacc. Clinton, G. P. Notes on Paras
RFHJ0BDG–Coloured scanning electron micrograph (SEM) of common environmental allergenic mould (Cladosporium sp.); fungal hyphae producing spores.Also known as Hormodendrum sp.This specimen was found on inner surface of building's air supply duct.This genus is most common outdoor airborne mould but may occur
RMPG3YE2–. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. FUNGI IMPERFECTI 307 usually before the middle or latter part of the summer; so that the tops are not often killed before the middle of July or the first of August in New York. The parasite does not pass down into the root nor does it induce rot of any kind in the roots. The general effect on the root of the plant is to reduce its growth, and proba- bly where the blight continues year after year the root will be so weakened that it will become subject to soil rots of various kinds.
RM2CDCD0D–. Fungous diseases of plants, with chapters on physiology, culture methods and technique . oland. The Potato Scab. Conn. Agl. Exp. Sta. (1890):81-95. Thaxter, Roland. The Potato Scab. Conn. Agl. Exp. Sta. (i891): 153-160. The scab of potatoes is a disease which is well known to grow-ers, dealers, and consumers alike, for the conspicuous scab pits orspots on the surface of tubers cannot fail to strike the attention. FUNGI IMPERFECTI 291 The disease is most common throughout the United States, anddoubtless throughout the potato-producing regions of Europe aswell. It is not positively demonstrate
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