Erysiphe liquidambaris (R. Y. Zheng & G. Q. Chen) U. Braun [2000170]

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

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Synonyms: Uncinuliella liquidambaris (R. Y. Zheng & G. Q. Chen) R. Y. Zheng; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Uncinula liquidambaris R. Y. Zheng & G. Q. Chen. Type: Uncinula liquidambaris R. Y. Zheng & G. Q. Chen.

Taxonomic Literature: Taxonomic notes: +asconata outer wall cells irregularly polygonal, ca. 7-21.3 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [547-548] (1987).

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

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Liquidambar formosana Hance; Liquidambar, Hamamelidaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or gregarious, (.09)-.112-.144-(.169) mm in diam.. Margin: External filaments present (two types of appendages: long, Uncinula-like appendages (see description below) and short, bristle-like appendages, scattered in the upper half of ascomata, 11-35 in number, shape irregular, falcate, straight and stiff, subundulate or with hooked apex, hyaline, yellowish, verrucose throughout, ca. 10-60 x 2.5-5.2 µm); circinate or sub-helicoid, 1-1.5 µm long, 4.6-7.6 µm in diameter, hyaline or pigmented (base yellowish), numerous, (12)-16-28-(35) per mm², growing between the lower and upper hald of the ascocarp (appendages mostly straight, rarely curved, width uniform throughout or slightly decreasing upwards), smooth or verrucose (below), thick (throughout, up to the circinate part, mostly coalescent, rarely thin-walled above), not ramified, aseptate.

Asci: (6)-8-10-(13) asci per ascocarp, distinctly stipitate, (45)-55-70-(80) µm long, (30)-35-50 µm wide; dehiscence unitunicate.

Ascospores: c. 4 or c. 8 per ascus, spores (4)-5-7-(8) per ascus, ellipsoid or ovoid (oblong-), (15)-17.5-21-(25.5) µm long, (10.5)-11-15-(16.5) µm wide; septa absent; wall pale brown.

(report generated 04.Okt.2007)