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Erysiphe incrassata (E. S. Salmon) U. Braun & S. Takam. [2027271]

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-31). Data set reviewer(s): Schubert K. (06-03-01); revised.

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

Type Information: Basionym: Uncinula incrassata E. S. Salmon. Type: Uncinula incrassata E. S. Salmon.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells obscure, polygonal to rounded, sometimes irregularly shaped, ca. 8-15 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [542-544] (1987).

Biogeography: Continent: Africa (Rhodesia, South Africa).

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Pterocarpus rotundifolius (Sond.) Druce; Pterocarpus, Leguminosae-Papilionoideae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or gregarious, .1-.18 mm in diam.. Margin: External filaments present (sometimes slightly narrowed upwards, straight to curved); uncinate (closely), circinate, or sub-helicoid, .5-1 µm long, 3.5-6.5 µm in diameter, hyaline, very numerous, 80-150 per mm², growing on the upper half of the ascocarp, flexuose (sometimes) or stiff and straight, smooth, irregularly thin (throughout) or thick, not ramified, aseptate.

Asci: 10-20 asci per ascocarp, not stipitate or indistinctly stipitate, 50-75 µm long, 30-45 µm wide; dehiscence unitunicate.

Ascospores: c. 4 per ascus, spores 4 per ascus, ellipsoid or ovoid, 20-28 µm long, 12.5-16 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid or cylindrical; macroconidial, not branched, 26-40 µm long, 11-15 µm wide; aseptate.

(report generated 04.Okt.2007)

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