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Erysiphe prasadii (M. K. Bhatn. & K. L. Kothari) U. Braun & S. Takam.

Data Set Maintenance: Data set compiled and standard item; reviewer(s): Schubert K. (06-03-27); revised.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Synonyms: Microsphaera prasadii M. K. Bhatn. & K. L. Kothari; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Microsphaera prasadii M. K. Bhatn. & K. L. Kothari. Type: Microsphaera prasadii M. K. Bhatn. & K. L. Kothari.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells obscure, polygonal to rounded, ca. 10-20 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [340-341] (1987).

Biogeography: Continent: Asia-Tropical. Country or state(s): India (endemic).

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous (dense coats on the upper surface of the leaves). Host or Phorophyte Taxonomy: Hamiltonia suaveolens (Roxb.) Roxb.; Hamiltonia, Rubiaceae.

Reproduction Strategy: Only known as sterile, asexually reproducing form (densely crowded) or with sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, in loose groups or gregarious, (.085)-.09-.125-(.14) mm in diam.. Margin: External filaments present; straight, 1-2 µm long, 5-9 µm in diameter, hyaline or pigmented (rarely at the very base), very numerous, 40-60 per mm², growing between the lower and upper hald of the ascocarp or on the upper half of the ascocarp, smooth, thin or moderatly thick (towards the base or thin-walled throughout), ramified, irregular (branchings diffuse), aseptate or septate (a single septum at the base, rarely a single septum in the upper part of the stalk).

Asci: 4-12 asci per ascocarp, not stipitate (subsessile) or indistinctly stipitate, 50-80 µm long, 35-50 µm wide; dehiscence unitunicate.

Ascospores: c. 4 or c. 8 per ascus, spores 4-5-(6) per ascus, ellipsoid or ovoid, 16-25 µm long, 11-18 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid or cylindrical; macroconidial, not branched, 30-50 µm long, 15-18 µm wide; aseptate.

(report generated 04.Okt.2007)

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