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Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-08-02). Data set reviewer(s): Schubert K. (06-04-05); revised.

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

Type Information: Basionym: Phyllactinia desmodii J. F. Tao, J. Z. Qin & Y. Z. Shen. Type: Phyllactinia desmodii J. F. Tao, J. Z. Qin & Y. Z. Shen.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells obscure, irregularly polygonal, ca. 18-24 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [587] (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: Desmodium sinuatum Blume; Desmodium, Leguminosae-Papilionoideae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered, .2-.327 mm in diam.. Margin: External filaments present; not interlaced, straight, (1)-1.7-2-(2.5) µm long, few or numerous, (5)-7-10-(16) per mm², growing between the lower and upper hald of the ascocarp, stiff and straight, not ramified.

Asci: 16-30 asci per ascocarp, distinctly stipitate, 70-105 µm long, 25-40 µm wide; dehiscence unitunicate.

Ascospores: 1–2 per ascus, spores 2 per ascus, ellipsoid (oblong-), 27.5-37.5 µm long, 15-20 µm wide; septa absent.

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