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Podosphaera euphorbiae-helioscopiae (Tanda & Y. Nomura) U. Braun & S. Takam.

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

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Synonyms: Sphaerotheca euphorbiae-helioscopiae S. Tanda & Y. Normura; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Sphaerotheca euphorbiae-helioscopiae S. Tanda & Y. Normura.

Taxonomic Literature: Taxonomic notes: +ascocarp outer wall cells polygonal, 10-32 x 10-21
+ascocarp ext. fil. very long, (365-)600-1000(-1300);.
Braun U., Beih. Nova Hedwigia 89: 1-700 [112] (1987).

Biogeography: Continent: Asia-Temperate. Country or state(s): Japan (endemic).

Ecology: Biotroph; phytopathogenic; amphigenous. Host or Phorophyte Taxonomy: Euphorbiaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, sub-scattered or gregarious, .07-.0762-.09 mm in diam.. Margin: External filaments present; interlaced with each other, mycelioid (strongly undulate), 4-14 µm long, 10-17.5 µm in diameter, hyaline or brownish pigmented, 5-12 per mm², growing all across the lower half of the ascocarp, flexuose (curved, rarely straight), thick, not ramified, not branched (usually), septate (1-11 septa).

Asci: 1 asci per ascocarp, sub-globose or broadly clavate, not stipitate or indistinctly stipitate, 50-75-(82) µm long, 43-57 µm wide; dehiscence unitunicate.

Ascospores: c. 8 per ascus, spores 8 per ascus, ellipsoid or ovoid, 20-28 µm long, 14 µm wide; septa absent.

(report generated 04.Okt.2007)

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