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Typus: Australia, Victoria, Kinglake, on E. goniocalyx, Sep. 1980, V. Beilharz (holotype DAR 35028). Not known from culture.
Pachysacca Syd., Annls Mycol. 28: 435. 1930. Fig. 68.
Ascostromata black, immersed between epidermis and mesophyll, solitary or scattered, multiloculate; peridium composed of pale brown to brown cells of textura angularis. Hamathecium lacking pseudoparaphyses. Asci 8-spored, bitunicate, fissitunicate, broadly obovoid at base, apical part subcylindrical, short pedicellate. Ascospores multiseriate, hyaline, smooth-walled, transversely septate, narrowly subcylindrical, with broadly rounded ends.
Type species: Pachysacca eucalypti Syd.
Symptoms: Ascomata develop between the epidermis and mesophyll, inducing a swelling of the leaf. Leaf spots are amphigenous, with a less well-developed stroma developing on the opposite side of the leaf; the fungus forms spreading dendritic or large circular stromata.
Notes: The fungus has a restricted distribution within a stand, usually being confined to a few trees in a forest. Fungal maturation depends on rainfall, and new infections occur during the cooler months (Park et al. 2000). Attempts to culture species of Pachysacca have thus far proven unsuccessful.
Pachysacca eucalypti Syd., Annls Mycol. 28: 435. 1930. Fig. 68.
Diagnosis: Asci develop in locules stroma formed between epidermis and mesophyll. Ascospores hyaline, cylindrical, 3-celled, 90-120 x 7 [micro]m.
Description and illustration: Swart (1982).
Typus: Australia, South Australia, Noarlunga Gorge, on E. rostrata, May 1924, G. Samuel (holotype K(M) 176511, isotype ADW 3822). For additional specimens see Swart (1982). Not known from culture.
Pachysacca pusilla H.J. Swart, Trans. Brit. Mycol. Soc. 79:268. 1982.
Diagnosis: Asci develop in locules stroma formed between epidermis and mesophyll. Ascospores hyaline, cylindrical, 4-celled, 38-46 x 4-5 [micro]m.
Description and illustration: Swart (1982).
Typus: Australia, Victoria, Mr Dandenong, on E. regnans, Sept. 1979, G. Marks (holotype DAR 37766). Not known from culture.
Pachysacca samuelii (Hansf.) H.J. Swart, Trans. Brit. Mycol. Soc. 79: 267. 1982. Fig. 68.
Basionym: Pseudosphaeria samuelii Hansf., Proc. Linn. Soc. N.S.W. 79: 118. 1954.
Diagnosis: Asci develop in locules, stroma formed between epidermis and mesophyll. Ascospores hyaline, elongate cylindrical, 4-celled, 60-65 x 6-7 [micro]m.
Description and illustration: Swart (1982).
Typus: Australia, South Australia, Cape Jervis peninsula, on E. obliqua, Jan. 1924, G. Samuel (lectotype ADW 2069). For additional specimens see Swart (1982). Not known from culture.
Pallidocercospora Crous, Stud. Mycol. 75: 73. 2012. Fig. 69.
Ascomata single, black, immersed, globose, glabrous; wall of 3-4 layers of medium brown textura angularis. Asci fasciculate, bitunicate, aparaphysate, subsessile, 8-spored, ellipsoid to obclavate or cylindrical, straight or curved, numerous. Ascospores 2-multi-seriate, oblique, overlapping, straight ellipsoidal to obovoid, colourless, smooth, 1-septate. Mycelium predominantly immersed, consisting of olivaceous-brown hyphae, smooth, branched, septate, 2-4 [micro]m diam. Conidiophores in vivo fasciculate, or occurring singly on superficial mycelium as lateral projections, unbranched or branched, septate, cylindrical, straight to geniculate-sinuous, olivaceous-brown. Conidiogenous cells integrated, terminal, cylindrical, straight to geniculate-sinuous, olivaceous-brown, proliferating sympodially or percurrently; conidiogenous loci unthickened, not darker than the surrounding conidiogenous cell. Conidia solitary, straight to irregularly curved, guttulate, pale olivaceous to olivaceous-brown, subcylindrical to narrowly obclavate, multiseptate; hila neither thickened nor darkened.
Type species: Pallidocercospora...