Erysiphe oleosa var. zhengii (U. Braun) U. Braun & S. Takam. [2014118]

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-31). Data set reviewer(s): Schubert K. (06-03-02); revised.

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

Type Information: Basionym: Uncinula oleosa var. zhengii U. Braun. Type: Uncinula oleosa var. zhengii U. Braun.

Taxonomic Literature: Taxonomic notes: This variety differs from var. oleosa by ascomata characters, see below. Braun U., Beih. Nova Hedwigia 89: 1-700 [511-513] (1987).

Biogeography: Continent: Asia-Temperate. Country or state(s): Japan (endemic).

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Tilia maximowicziana Shiras.; Tilia, Tiliaceae.

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 (width gradually increasing from base to top, 7-10(-14) µm wide above, apex usually somewhat enlarged, occasionally strongly enlarged); circinate (closely) or sub-helicoid, 1.5-2-2.25 µm long, 5-7.5-(14) µm in diameter, few or numerous, (6)-10-25 per mm², growing between the lower and upper hald of the ascocarp, flexuose or geniculate (bent) (sometimes), not ramified, septate.

Asci: 3-6 asci per ascocarp, not stipitate or indistinctly stipitate, 45-60 µm long, 35-50 µm wide; dehiscence unitunicate.

Ascospores: c. 4 or c. 8 per ascus, spores 5-7 per ascus, ellipsoid, ovoid, or sub-cylindrical, 18-25 µm long, 10-15 µm wide; septa absent.

(report generated 04.Okt.2007)