Erysiphe sambuci var. crassitunicatae R. Y. Zheng & G. Q. Chen

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 or basionymous. Taxonomic rank: variety. Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Erysiphe sambuci var. crassitunicatae R. Y. Zheng & G. Q. Chen. Type: Erysiphe sambuci var. crassitunicatae R. Y. Zheng & G. Q. Chen.

Taxonomic Literature: Taxonomic notes: +ascocarp outer wall cells irregularly polygonal, ca. 5-15 µm diam.;this variety differs from var. sambuci by very thick walled asci, the appendages form chain like swellings in the upper half. Braun U., Beih. Nova Hedwigia 89: 1-700 [226-228] (1987).

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

Ecology: Biotroph; phytopathogenic; growing on stems or leaves, amphigenous. Host or Phorophyte Taxonomy: Sambucus adnata Wall.; Sambucus, Caprifoliaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or in loose groups, (.08)-.095-.15 mm in diam.. Margin: External filaments present (the appendages form chain-like swellings in the upper half); mycelioid, straight, (.5)-1-2-(2.5) µm long, (4)-5-6-(7.5) µm in diameter, hyaline (at first; 2: later brown throughout, seldom brown below and paler upwards) or pigmented, few or numerous, growing all across the lower half of the ascocarp, smooth or rough, thin, not ramified, septate.

Asci: (2)-3-6 asci per ascocarp, not stipitate or indistinctly stipitate, 50-70 µm long, 30-55 µm wide; dehiscence unitunicate (very thick-walled).

Ascospores: 1–2 to c. 4 per ascus, spores 2-4 per ascus, ellipsoid or broadly ovoid, 20-26-(28) µm long, 14-18-(21) µm wide; septa absent.

(report generated 04.Okt.2007)