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Erysiphe crotonis (Piroz.) U. Braun & S. Takam. [2003120]

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-28). Data set reviewer(s): Schubert K. (06-02-28); revised.

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

Type Information: Basionym: Uncinula crotonis Piroz. Type: Uncinula crotonis Piroz.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells irregularly shaped, obscure. Braun U., Beih. Nova Hedwigia 89: 1-700 [487] (1987).

Biogeography: Continent: Africa. Country or state(s): Zambia (only known from the type collection).

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Croton megalobotrys Müll.Arg.; Croton, Euphorbiaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, gregarious, .1-.135 mm in diam.. Margin: External filaments present (straight to curved, width subequal throughout, but narrowing towards the apex, apical part usually fairly widely curved, loose); regularly circinate, 1-1.1-1.5 µm long, 4-5 µm in diameter, hyaline, numerous, 25-35-45 per mm², growing between the lower and upper hald of the ascocarp, thin or moderatly thick (at the base and at the very tip), not ramified, aseptate or septate (rarely with a single septum at the base).

Asci: Dehiscence unitunicate (asci and ascospores immature).

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid; macroconidial, not branched, 20-27 µm long, 8-13 µm wide; aseptate.

(report generated 04.Okt.2007)

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