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Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-08-01). Data set reviewer(s): Schubert K. (06-07-26); revised.

Nomenclature: Current taxonomic status: basionymous. Taxonomic rank: species. Currently accepted name Golovinomyces orontii (Castagne) V. P. Gelyuta. Erysiphaceae Tul. & C. Tul.; Erysiphales.

Taxonomic Literature: Taxonomic notes: +hyphae slightly flexuous, branched at right angles, ca 5-7 µm wide; +appressoria nipple-shaped, often poorly developed;+conidiophores foot-cells straight or often curved below, followed by 1-3 shorter cells, about 10-25 x 11-14 µm, sometimes longer;= anamorph of Golovinomyces orontii, host range cf. G. orontii ! Braun U., Beih. Nova Hedwigia 89: 1-700 [617] (1987).

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous (effuse or patches, evanescent to persistent). Host or Phorophyte Taxonomy: Acanthaceae, Apocynaceae, Asclepiadaceae, Begoniaceae, Bignoniaceae, Campanulaceae, Cistaceae, Compositae, Crassulaceae, Cruciferae, Cucurbitaceae, Ericaceae, Euphorbiaceae, Gesneriaceae, Hydrangeaceae, Labiatae, Linaceae, Malvaceae, Myrtaceae, Oxalidaceae, Papaveraceae, Pedaliaceae, Primulaceae, Scrophulariaceae, Solanaceae, Urticaceae, Valerianaceae, Verbenaceae, Violaceae, and Vitaceae.

Conidiophores: Euoidium-type; not branched (erect); basal cells 40-100 µm long, 10-13 µm wide. Conidium Formation: Conidiogenous cells in chains (chains usually not very long, spore units not conspicuously swollen). Conidia: Ellipsoid, ovoid, doliiform, or sub-cylindrical; macroconidial (germ tubes arising from an end of the spore, occasionally from a side, usually fairly short, about as long as the conidia or shorter, sometimes twisted, broadened, sometimes straight, bent or helicoid, terminating in a slightly swollen appressorium), not branched, 25-40 µm long, 15-23 µm wide; aseptate.

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