Inditm Plttropath. 48 (3) : 260-262 (1995) Two new Indian hyphomycetes V.B. HOSAGOUDARI and U. BRAUN2 lBotttnicol Sun,et o.f India, Southern Circle, T.N.A.U. Campus, Coimbtttore 641 003 7.N., India 2Mctrtin-Luther-{Jniversität, F.B. Biologie, Institut Für Geobotanik und Botanischer Garten, Neuwerk 21, D-06099 Halle/S., Germant Abstract '. PericonieLLa perseae-macranthae spec. nov. on Persea macrantha (Lawaceae) and SteneLla cirtttantorrti spec. nov. on Cinnannnrwn sulphuratutn (Latraceae) are two new species described from lndia. Keywords : New species , PericonieLLa perseae-macranthae, Stenell.a cinnamomi Periconiellcl perseae-macranthae sp. nov. (Fig. 1) True leaf spots absent, if present only in diffuse colourations. Colonies hypophyllous, in irregular patches. sometimes large, confluent, of the apical branched head, often somewhat swollen, polyblastic, sympodial. somewhat geniculate or subdenticulate, conspicuously cicatrized, conidial scars slightly branchlets coverin-[ almost the entire iower surf'ace. Mycelium mainly present externally, superficial, internal rnycelium absent or sparsely developed. Hyphae crecping, septaJe, branched, occasionally anastomosin,e, r,erruculose, pale olivaceous to ycllowish blown, (1-) 1.5-2.5 (-3.5) prm wide, sonrewhat darker and wider around the conidiophores. Conidiophores solitary, arising from creeping hyphae, erect, straight or slightly curved, 250-800 x 3-5 ;rm, septate, brown, apex paler, olivaceous, alrnost smooth to verruculose, conidiophores composed of a very long main axis (about 200-700 pun long) with a branched apical head, usually 1-3 times dichotomously to irregularly branched, branches usually 5-60 pm long. terminal, parily lateral, rarely trichotomously branc hed, con idi o-senous cell s integrated, terminal ancl pleurogcnous, I'orming the ultimate Rcccivcd lbr publication July ,19, 1994. Fig. 1. A-D.PericonielLa perseae-macranthae sp. nov. A. Hyphae B. Conidiophores C. Conidiogenous cells D. Conidia Indian thickened and darkened. rninute. Conidia solitary, rarell, in shorl chains. ellipsoid-ovoid, subcylindric, (8-) 10-32 x 3-6 pm, (11-) 2-3 (-4)-septate' Pltt'toPctthologt' 261 chinensis. This species is quite distinct in having very long, obclavate, multseptate conidia. P. perseae McKenzie (1990), described from Australia on verruculose. pale olivaceous to olivaceous brown, apex usually rounded, base slightly obconically truncate. hila slightly thickened and darkened. Persea americana, is characterized by one-celled coniclia and smooth conidiophores with very richll' branched apex. Maculae nullae ve1 diffusae. Coloniae hypoph-vllae. irregulariter maculatae, effusae, Stenella cinnamomi sp. nov. (Fig. 2) inteldum confluentes. Mycelium saepe externum, raro irnmersum. Hyphae repentes, superficiale, difTuse pale yellowish-ochraceous discolorations' septätae, ramosac' interdum confiuentes, verruculosae, pallide olivaceae vel flavidobrunneac. (1-) 1.5-2.5 (-3.5) pm latae, ad basim conidiophoram lenissime tuscatae et incfassatae. Conidiophora solitaria, ex hyphis repentibus lateraliter oriunda. erecta, non ve1 leniter curvata, 250-800 x 3-5 prm, septatel, brunnea, ad apicem pallicle olivacea, sublaevia vel verruculosa, stipitata (ca. 200-700 prm longa), ad apicem dichotome, raro trichotome vell irre-gulariter ramosa, ramis saepe 5-60 pm longis. Cellulae conidiogenae integratae, tclrninaliac vel pleurogenae. saepe lenissime incrassatae. polyblasticae sympodiales, leniter geniculatae. subdenticulatae. Cicätrices conidiaies conspicuae. leniter incrassatae, fuscatae, minutae. Coni<.lia solitaria, raro catenulata, ellipsoideaovoiclea, subcylindrica, (8-) 10-32 x 3-6 pm (1-) 23 (-4) septata, verruculclsa. pallide olivacea vel olivaceo-brunnea. ad apicem saepe rotundata, basi leniter obconice truncata, hila leniter incrassata, fu s c True ieaf spots absent, sometimes forming Colonies hypophyllous, forming large, subcircular ro somewhat irregular patches, 5-40 mm diam'. velvety, ciull brown, sometimes with a dull purplish tinge. Primary mycelium internal. secondary mycelium external. Hyphae creeping, septatc. branchecl. verruculose, interlaced with each other. (l-) 1.5-3 (-3.5) pm wide, subhyalinc. palc olivaceous to yellowish brown. sometimes clarker around the conidiophores, brown. Conidiophores solitary, arising lrom creeping hyphae, crect. simple, rarely branched, smooth. rvith up to 5 septa, wall somewhat thickened, 50-120 x 2-'l pm, pale to medium brown, paler towarcls conidiogenous celis integrated, terminal' geniculate, polyblastic, sympodial, conidial scars conspicuous, numerous, minute, slightly thickcned and darkened. Conidia solitary, rarely in short chains, eilipsoid-ovoid, subcylindric, obclaverte- zita. Holotypc : on living and fäding leaves of Persea macrantha (Nees) Kosterm. (Lauraceae), Koomati. Anamalai, Coimbatore, T.N., India, 13-31994. leg. V.B. Hosagoudar (HAL). Isotype: HClO. P. perseae-macranthae spec. nov. is a typical Periconiellcz, morphologically allied to P. deinbolliae M.B. Ellis andP. phormil M'B. Ellis (191 6). Thc lattcr species difTers by forming c.listinct. large. reddish patches. The conidiophores are only pltiinly branched. P. deinbolliae is characterized by smooth, liequently catenate coniclia. Periconiellct, longispora Kamal, S' Singh & R.P. Singh (1979) is an Indian species onLitsea the apex, subhyaline to pale yellowish brown, smooth' 2 Fig. 2. A-D SteneLla cinnanromi sP.nov .A. Hyphae B. Conidiophores C. Conidlogenous cells D. Conidia 262 Indian Phlttopatholo 91, fusiform, B-20 x 2_3.5 pm, 0_2_septate, vermtculose, colour variable, ranging from subhyalin", olira""ors to pale yellowish brown, hila siighrly thickened and darkened. Maculae nullae vel diffusae, pallide flavido_ ochraceae: Coloniae hypophyllae, urnptu", suborbiculares vel lenite. ,.r.guiu..r, S_+fj _* latae, velutinae, sordide brtinneae,' inr".ou* tuty""fiu* primarium internum. Mycelium r""urA_lurn lenissime sordide purpureo_brunneae. eexternum: hyphae repentes, septatae, ramosae, verruculosae, intricatae, (1_) Jatae, subhyalinae, pailide 1.5_3 (_3.5) pm olivaceae,"f nuuiao_ brunneae, interdum brunneae. Conidiophora ex hyphis repentibus lateraliter oriunda, erecra, simplicia. raro ramosa. laevia. septata f_S;. leniter crassitunicata, 50_ 120 x 2_4 pm,paUiae' rrei moaice brunnea, ad apicem subhyalinae ,"f puffia" nuilaobrunnea, laevia. Cellulae conidiogenae lnt"g.ut*, terminaliae, genicularae, polyblasticae, ry*poäiA".. Cicatrices conidiales conspicuae, nu*".oru", minutae, leniter incrassatae, fuscata. Conidia solitaria, raro catenata, ellipsoidea_ovoidea, subcylindrica, obclavata_fusifoimia, S_ZO x i_l.S pm, 0-2 septata, verruculosa, subhyalina, olivacea vel pallide flavido-brunnea, hila l"rit". in..u.rutu, fuscata. Holotype : onliuing leauess of Cinnamomum . s.ulphureum Nees (Laura..u"j, furiun St,ofu, Anamaiai, Coimbatore, T.N., India, t+_l_ I Oü,' ieg. V.B. Hosagoudar (HAL). Isotype : HCIO qt'iZt. The present species is the only Stenella on Cinnamomum and allied hosts. It belongs to a group of species with long conidiophorJs and small conidia with few septa. Steneltä smi.lacis Kumar et al. (19g0) belongs ro rhe same group, but is distinct in har s ep tar e- co n ra iop h o I'Jss ;;:'lä".'j, ;" J;[: y Stenella sonapathriezsls Khan at. fi'Srol, "t Vertilag,e recently described from India on madraspatozo (Rhamnaceae). resembles,S. cinna.momi, but differs by conidia usuatty iormeO in chains. Acknowledgement The senior author is grateful to the Scientist,s Pool Scheme of CSIR, New Delhi for the financial help. REFERENCES Ellis, M.B. (1976). More Dematiaceous Hyphomycetes. Kew, IMI 506pp. Kamal, Singh, S. and Singh, R.p. (1979). A new species of periconiella frory India. 48 : Crzrr. 211. .Sci. Khan, M.K., Khan, M.S. and Kamal (1994). New species of'pseudocercospora and StunelLa from India. Mycol. Res. 9g : l27j_12g3. Kumar, P., Shukla, D.N. and Kamal (19g0). A new species of Stenella from India. 235. Curr. Sci. 49:234_ McKenzie, E.H.C. (1990). New species per of iconie!la. Mycotaxon 3g : 229_236.