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Erysiphe floccosa (Piroz.) U. Braun & S. Takam. [2008245]

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-27). Data set reviewer(s): Schubert K. (06-03-01); revised.

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

Type Information: Basionym: Uncinula floccosa Piroz. Type: Uncinula floccosa Piroz.

Taxonomic Literature: Taxonomic notes: +ascocarp outer wall cells polygonal to rounded, ca. 10-13 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [460-461] (1987).

Biogeography: Continent: Africa. Country or state(s): Zambia (endemic).

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Combretum mechowianum O. Hoffm.; Combretum, Combretaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, gregarious (embedded in white, dense, cottony cushions up to 2 mm deep and composed of intertwined appendages), .1-.18 mm in diam.. Margin: External filaments present (up to 2000 µm long); interlaced with each other, uncinate or circinate, 6-10-12 µm long, 4-7 µm in diameter, hyaline, few or numerous, 10-25 per mm², growing on the upper half of the ascocarp, flexuose, thin or very thick (distal end), not ramified, aseptate.

Asci: 20 asci per ascocarp, distinctly stipitate, 45-55 µm long, 25-35 µm wide; dehiscence unitunicate.

Ascospores: c. 8 (asci immature, ascospores immature, possibly 6-8) per ascus, spores 6-8 per ascus.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid or cylindrical; macroconidial, not branched, 35-45 µm long, 12-18 µm wide; aseptate.

(report generated 04.Okt.2007)

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