Erysiphe aspera var. sparsichaeta (G. J. M. Gorter & Marasas) U. Braun & S. Takam. [2000248]

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Schubert K. @EXCL@ Kainz C. (06-03-29).

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: variety. Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Uncinula aspera var. sparsichaeta G. J. M. Gorter & Marasas. Type: Uncinula aspera var. sparsichaeta G. J. M. Gorter & Marasas.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells distinctly angular, 10-20 µm diam. Gorter G.J.M.A. & Marasas F.O., Phytophylactica 20: 393-395 (1988).

Biogeography: Continent: Africa. Region(s): Southern Africa (South Africa). Country or state(s): Transvaal (north-eastern South Africa).

Ecology: Biotroph; phytopathogenic; growing on leaves. Host or Phorophyte Taxonomy: Ficus sycomorus L.; Ficus, Moraceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid (dark brown), orbicular (flattened-globose), forming independently from the host thallus or mycelium, .085-.105 mm in diam.. Margin: External filaments present; uncinate (or somewhat spiral), 40-90 µm long, hyaline, few, (5)-8-12-(15) per mm², growing between the lower and upper hald of the ascocarp, flexuose (more or less) or stiff and straight, smooth or rough (lower part), thin or thick (thickening from 5 to 9 µm in upper half, then tapering to apex), not ramified, aseptate.

Asci: 4 asci per ascocarp, sub-globose, not stipitate or indistinctly stipitate (very briefly), 45-60 µm long, 35-50 µm wide; dehiscence unitunicate.

Ascospores: c. 4 or c. 8 per ascus, spores 4-6 per ascus, oblong, 20-27.5 µm long, 12.5-15 µm wide; septa absent; wall thin or thick (often slightly thicker at one end), hyaline.

(report generated 04.Okt.2007)