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Erysiphe caricae U. Braun & Bolay

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Schubert K. @EXCL@ Kainz C. (06-09-07).

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Synonyms: Oidium caricae F. Noack emend. J. R. Liberato & R.W. Barreto (anamorph); Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Erysiphe caricae U. Braun & Bolay. Type: Erysiphe caricae U. Braun & Bolay.

Taxonomic Literature: Taxonomic notes: + hyphae branched, septate, ca. 4-8 µm wide, hyaline; appressoria lobed, mostly solitary; ascomata outer wall cells polygonal, irregular-angular, 10-25(-30) µm diam. Bolay A., Cryptogamica Helvetica 20: 1-176 [46] (2005).

Biogeography: Continent: Africa, Asia-Temperate, Australasia (New Zealand), Europe, Southern America (Brazil, Venezuela), and Asia-Tropical. Country or state(s): Switzerland (incl. Liechtenstein) and Portugal; Kenya and Madagascar; Taiwan; India; Venezuela.

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Carica pentagona Heilb.; Carica, Caricaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular (subglobose), forming independently from the host thallus or mycelium, scattered, .085-.125 mm in diam.. Margin: External filaments present (0.5-2 times as long as the cleistothecial diam.); mycelioid, straight, 3-10 µm in diameter, pigmented (brown at the base, subhyaline at the apices), numerous, growing between the lower and upper hald of the ascocarp, flexuose, smooth or verrucose (verruculose), thin or moderatly thick (at the base), not ramified or often ramified, sub dichotomously branched or irregular, septate.

Asci: 3-5 asci per ascocarp, obclavate (saccate), distinctly stipitate, 50-60 µm long, 30-40 µm wide; dehiscence unitunicate.

Ascospores: c. 4 per ascus, spores (3)-4-(5) per ascus, ellipsoid or ovoid, 15-24 µm long, 9-14 µm wide; septa absent; wall hyaline, not ornamented.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched; conidiophore cells 75-200 µm long, basal cells 25-55 µm long, 7-12 µm wide. Conidium Formation: Conidiogenous cells single or in chains ((vel saepe catenata)). Conidia: Ellipsoid, ovoid, or sub-cylindrical; macroconidial (smooth; germ tube apical, long, appressoria lobed), not branched, 30-50 µm long, 12-22-(24) µm wide; aseptate; cell wall hyaline; without distinct fibrosin body fibrosin bodies.

(report generated 04.Okt.2007)

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