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Erysiphe ceibae (Viégas) U. Braun & S. Takam.

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-28). Data set revised.

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

Type Information: Basionym: Uncinula ceibae Viégas. Type: Uncinula ceibae Viégas.

Taxonomic Literature: Taxonomic notes: +appressoria lobed;+conidiophores foot-cells characteristically curved or flexuous, followed by 1-2 shorter cells;+ascocarp outer wall cells irregularly polygonal, ca. 8-25 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [477-478] (1987); Braun, U. & Takamatsu, S., Schlechtendalia 4: 1-33 [18] (2000).

Biogeography: Continent: Southern America (Argentina, Brazil).

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Bombacaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or in loose groups, .09-.15 mm in diam.. Margin: External filaments present; uncinate (closely), circinate, or helicoid (sub-, later), .75-1.5 µm long, 4-7.5 µm in diameter, hyaline, numerous, 30-80 per mm², growing more or less between the lower and upper hald of the ascocarp, flexuose or stiff and straight (straight or somewhat curved, seldom flexuous; rather), smooth or faintly rough (rarely), thin (throughout, occasionally slightly thicker at the base) or moderatly thick, not ramified, aseptate or septate (with a single septum at the base).

Asci: 5-8 asci per ascocarp, 50-60 µm long, 30-35 µm wide; dehiscence unitunicate (mostly not developed, immature).

Conidiomata: Present; hyphomycetous.

Conidiophores: Not branched. Conidium Formation: Conidiogenous cells single. Conidia: Ovoid, doliiform, or cylindrical (usually); macroconidial (fresh conidia with oil drops; germ tubes arising from an end of the spore, short to moderately long, occasionally 2-3 germ tubes on a single conidium, terminating in an unlobed appressorium, appressorium occasionally slightly lobed), not branched, rounded at both ends, (22)-25-40 µm long, 12-20 µm wide; aseptate.

(report generated 04.Okt.2007)

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