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Erysiphe rabdosiae 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: species. Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Erysiphe rabdosiae R. Y. Zheng & G. Q. Chen. Type: Erysiphe rabdosiae R. Y. Zheng & G. Q. Chen.

Taxonomic Literature: Taxonomic notes: +ascocarp outer wall cells irregularly polygonal, ca. 7.5-20(-25) µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [230-231] (1987).

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

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Rabdosia kangtingensis C.Y. Wu & H. W. Li; Rabdosia (= Plectranthus), Labiatae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, in loose groups (spread over the entire surface of the leaves) or gregarious, (.08)-.095-.115-(.13) mm in diam.. Margin: External filaments present (straight to slightly curved, rarely subundulate, often unequal in length in different ascocarps; rarely slightly attenuated upwards, often somewhat pointed at the apex, rarely obtuse); not interlaced, straight, .5-2 µm long, (5)-7.5-10-(11) µm in diameter, hyaline or pigmented (yellowish, sometimes brown at the very base), numerous, (8)-13-18-(32) per mm², growing all across the lower half of the ascocarp, stiff and straight (to slightly curved, rarely subundulate), smooth or rough (rarely), thin, not ramified, aseptate or septate (0-1-septate, very rarely with one septum near the middle of the appendage).

Asci: (4)-6-9-(12) asci per ascocarp, not stipitate or indistinctly stipitate, 40-65 µm long, 30-50 µm wide; dehiscence unitunicate.

Ascospores: c. 4 to c. 8 per ascus, spores (3)-4-6-(7) per ascus, ellipsoid or ovoid, (10)-16-23.5 µm long, 11-16.5 µm wide; septa absent; wall pale brown (yellowish).

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: Doliiform (short); macroconidial, not branched, 20-31 µm long, 13-17 µm wide; aseptate.

(report generated 04.Okt.2007)

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