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Oidium stachytarphetae W. Y. Yen

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-08-01). Data set reviewer(s): Schubert K. (06-07-25); revised.

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

Type Information: Basionym: Oidium stachytarphetae W. Y. Yen. Type: Oidium stachytarphetae W. Y. Yen.

Taxonomic Literature: Taxonomic notes: +hyphae branched, septate, 5-8.4(-9.6) µm wide; +appressoria lobed;+conidiophores foot-cells cylindric;. Braun U., Beih. Nova Hedwigia 89: 1-700 [616] (1987).

Biogeography: Continent: Asia-Tropical. Country or state(s): India (and Singapore) and Sri Lanka.

Ecology: Biotroph; phytopathogenic; growing on leaves (white, effuse, confluent). Host or Phorophyte Taxonomy: Stachytarpheta indica (L.) Vahl; Stachytarpheta, Verbenaceae.

Reproduction Strategy: Only known as sterile, asexually reproducing form.

Conidiomata: Present; hyphomycetous.

Conidiophores: Not branched (erect, 3-5(-6)-septate, cylindric, 66-156 x 13.2-16.8 µm (with conidia)); basal cells 24-43.2 µm long, 10-14.4 µm wide. Conidium Formation: Conidiogenous cells in chains. Conidia: Ovoid or cylindrical; macroconidial (primary conidia 33.6-39.6 x 15.6-17(-20.5) µm, secondary conidia see below; germ tubes at an end of the spore, short, terminating in a lobed appressorium), not branched, 34-54 µm long, 14.4-18-(20.5) µm wide; aseptate.

(report generated 04.Okt.2007)

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