Erysiphe epimedii var. brunnea R. Y. Zheng & G. Q. Chen

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-21). Data set reviewer(s): Schubert K. (06-03-23); not revised (00-08-02).

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

Type Information: Basionym: Erysiphe epimedii var. brunnea R. Y. Zheng & G. Q. Chen. Type: Erysiphe epimedii var. brunnea R. Y. Zheng & G. Q. Chen.

Taxonomic Literature: Taxonomic notes: +ascocarp outer wall cells irregularly polygonal, 7-20 µm diam.;This variety differs from var. aquilegiae by appendage and ascospore characters, see below. Braun U., Beih. Nova Hedwigia 89: 1-700 [225-226] (1987).

Biogeography: Continent: Asia-Temperate. Region(s): China (only known from the type collection).

Ecology: Biotroph; phytopathogenic; growing on leaves, hypophyllous. Host or Phorophyte Taxonomy: Epimedium brevicornum Maxim.; Epimedium, Berberidaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or in loose groups, .102-.135-(.16) mm in diam.. Margin: External filaments present (curved to substraight, length variable, long and short ones mixed; (48-)100-510 µm long, width subuniform throughout ot broader below); straight, (.5)-1-4-(5) µm long, (2.5)-5-7.5 µm in diameter, pigmented (brown more or less throughout, light brown in the upper half), numerous, growing all across the lower half of the ascocarp, thin, not ramified, septate.

Asci: 7-12-(15) asci per ascocarp, not stipitate (sometimes) or indistinctly stipitate, 50-80 µm long, 30-45 µm wide; dehiscence unitunicate (wall verrucose).

Ascospores: c. 4 to c. 8 per ascus, spores 4-6-(7) per ascus, subglobose, ellipsoid (shape of the ascospores fairly variable), or ovoid; septa absent.

(report generated 04.Okt.2007)