Erysiphe hypericicola U. Braun & S. Takam.

Data Set Maintenance: Data set compiled and standard item; reviewer(s): Schubert K. (06-03-23); revised.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Synonyms: Microsphaera hyperici Y. N. Yu & Y. Q. Lai; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Microsphaera hyperici Y. N. Yu & Y. Q. Lai. Type: Microsphaera hyperici Y. N. Yu & Y. Q. Lai.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells polygonal, 15-25 x 12-20 µm;. Braun U., Beih. Nova Hedwigia 89: 1-700 [347] (1987).

Biogeography: Continent: Asia-Temperate. Region(s): China (endemic).

Ecology: Biotroph; phytopathogenic; growing on leaves, epiphyllous (mostly) or amphigenous. Host or Phorophyte Taxonomy: Hypericum patulum Thunb.; Hypericum, Guttiferae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, .085-.12 mm in diam.. Margin: External filaments present (curved, mostly 100-140 µm long); recurved (but mostly not recurved) or straight, 1-1.6 µm long, 7.5-10 µm in diameter, hyaline or faintly pigmented (at the base), few, (5)-7-11-(13) per mm², growing between the lower and upper hald of the ascocarp, smooth or verrucose (rarely), thin or moderatly thick (sometimes below), ramified, dichotomously branched ((2-)4-6(-7) times, branchings regular and close, or primary branches elongated, tips of the ultimate branchlets obtuse or subacuminate, straight to recurved, mostly not recurved), aseptate or septate (rarely a single septum near the base).

Asci: (4)-5-7-(9) asci per ascocarp, not stipitate (seldom) or indistinctly stipitate, 47-55 µm long, 38-48 µm wide; dehiscence unitunicate.

Ascospores: c. 4 or c. 8 per ascus, spores (3)-5-6-(7) per ascus, ellipsoid, ovoid, or cylindrical (shortly), 17-24 µm long, 10-14 µm wide; septa absent.

(report generated 04.Okt.2007)