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Podosphaera euphorbiae-hirtae (U. Braun & Somani) 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-hirtae U. Braun & R. B. Somani; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Sphaerotheca euphorbiae-hirtae U. Braun & R. B. Somani.

Taxonomic Literature: Taxonomic notes: +appressoria nipple-shaped;
+conidiophores foot-cells cylindric,
followed by 1-3 shorter cells;
+ascocarp outer wall cells large,
conspicuous, irregularly shaped, ca. 15-40 µm diam.;.
Braun U., Beih. Nova Hedwigia 89: 1-700 [143-144] (1987).

Biogeography: Continent: Asia-Temperate and Asia-Tropical. Country or state(s): Japan and Taiwan (+Singapure and Sri Lanka); India and Peninsular Malaysia (= Malaya, Malaysia).

Ecology: Biotroph; phytopathogenic; growing on stems or leaves, 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, scattered or in loose groups, (.07)-.075-.1-(.11) mm in diam.. Margin: External filaments present; mycelioid, .5-2.5 µm long, 4-11 µm in diameter, hyaline or pigmented (later, yellowish to brown), few, smooth, thin, not ramified, septate.

Asci: 1 asci per ascocarp, sub-globose (immature asci subglobose, ellipsoid, fairly thick-walled, ca. 60-85 x 50-65 µm, content granular, filled with oil-drops, 6-8 spored, spores subglobose (-ellipsoid), fairly small, ca. 15-22 x 13-20 µm; mature asci (content clear, transparent) oblong, ellipsoid-ovoid, fairly thin-walled, rapidly swelling in water, ca. 70-130 x 65-80 µm, mature spores large, ca. 20-28 x 17-22.5 µm), clavate, or cylindrical, 60-130 µm long, 50-80 µm wide; dehiscence unitunicate.

Ascospores: c. 8 per ascus, spores 6-8 per ascus, subglobose or ellipsoid, (20)-15-22-(28) µm long, (17)-13-20-(22.5) µm wide; septa absent; wall thin, remaining hyaline, hyaline, not ornamented.

Conidiomata: Present; hyphomycetous (conidiophores erect and straight).

Conidiophores: Oidium-type; not branched; conidiophore cells 120-250 µm long, basal cells 35-90 µm long, 10-14.5 µm wide. Conidium Formation: Conidiogenous cells in chains (ca. 3-8). Conidia: Ellipsoid, ovoid, or doliiform; macroconidial, not branched, (20)-25-38 µm long, 13-21-(23) µm wide; aseptate; with distintly visible fibrosin body fibrosin bodies.

(report generated 04.Okt.2007)

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