Erysiphe tectonae (E. S. Salmon) U. Braun & S. Takam. [2027264]

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-31). Data set reviewer(s): Schubert K. (06-03-06); revised.

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

Type Information: Basionym: Uncinula tectonae E. S. Salmon. Type: Uncinula tectonae E. S. Salmon.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells irregularly shaped, ca. 10-25 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [535-536] (1987).

Biogeography: Continent: Asia-Tropical. Country or state(s): India and Burma (= Myanmar).

Ecology: Biotroph; phytopathogenic; growing on leaves, epiphyllous. Host or Phorophyte Taxonomy: Tectona grandis L.f.; Tectona, Verbenaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, in loose groups or gregarious, (.09)-.11-.14-(.16) mm in diam.. Margin: External filaments present (often unequal in length, straight to curved, delicate, width somewhat decreasing upwards, apex not enlarged, often even narrowed towards the tip); uncinate (loosely to closely), circinate, or sub-helicoid, .8-1-1.2 µm long, 3-8 µm in diameter, hyaline, numerous, 20-100 per mm², growing between the lower and upper hald of the ascocarp or somewhat on the upper half of the ascocarp, flexuose, stiff and straight (rather), or geniculate (bent) (sub-, sometimes, or irregular), smooth (opaque), rough, or verrucose (sometimes strongly), thin or thick (later, at least below), not ramified, aseptate.

Asci: (2)-4-8-(10) asci per ascocarp, distinctly stipitate, 50-95 µm long, 30-50 µm wide; dehiscence unitunicate.

Ascospores: c. 4 or c. 8 per ascus, spores (4)-5-6-(8) per ascus, subglobose, ellipsoid, or ovoid, 19-28 µm long, 13-21 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: More or less cylindrical; macroconidial, not branched, 30-40 µm long, 13-18 µm wide; aseptate.

(report generated 04.Okt.2007)