Erysiphe epimedii (F. L. Tai) R. Y. Zheng & G. Q. Chen var. epimedii

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

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

Type Information: Basionym: Erysiphe polygoni var. epimedii F. L. Tai. Type: Erysiphe polygoni var. epimedii F. L. Tai.

Taxonomic Literature: Taxonomic notes: +ascocarp outer wall cells irregularly polygonal, 7-20 µm diam.;. 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 or broader below); straight, (.5)-1-4-(5) µm long, (2.5)-5-7.5 µm in diameter, pigmented (yellowish, sometimes brownish below), numerous, growing all across the lower half of the ascocarp, stiff and straight (substraight to curved), verrucose, thin, not ramified, aseptate.

Asci: 7-12-(15) asci per ascocarp, not stipitate 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, more or less ellipsoid (rarely sole-shaped), (18)-20-30.5 µm long, (9)-10-13 µm wide; septa absent; wall pale brown (yellowish).

(report generated 04.Okt.2007)