Golovinomyces californicus (U. Braun) V. P. Gelyuta [2000313]

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. Data set reviewer(s): Schubert K. (06-02-22); revised.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Synonyms: Erysiphe californica U. Braun; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Erysiphe californica U. Braun. Type: Erysiphe californica U. Braun.

Taxonomic Literature: Taxonomic notes: +conidiophores long, straight, cylindric;+ascocarp outer wall cells obscure, irregularly shaped, ca. 8-25 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [256-257] (1987).

Biogeography: Northern hemispheric. Continent: Northern America (USA, western states, Calif.-Wash.). Country or state(s): Oregon (USA), Washington (USA), and California (USA).

Ecology: Biotroph; phytopathogenic; growing on stems or leaves, amphigenous. Host or Phorophyte Taxonomy: Eriogonum blissianum H. Mason; Eriogonum, Polygonaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, not emerging (in the tomentum of the host leaves or stems or in the dense mycelium), scattered or gregarious, .1-.15-(.185) mm in diam.. Margin: External filaments present (mostly sparsely developed; about as long as the cleistothecial diam. or shorter, often very short, sometimes rudimentary); interlaced with each other (sometimes) or interwoven with surrounding mycelium, mycelioid, straight, (2.5)-3.5-7.5 µm in diameter, hyaline, few or numerous, growing all across the lower half of the ascocarp, smooth or rough, thin, not ramified, septate (few inconspicuous septa).

Asci: 10-25-(35) asci per ascocarp, distinctly stipitate, 50-90 µm long, 20-35 µm wide; dehiscence unitunicate.

Ascospores: 1–2 to c. 4 per ascus, spores 2-(3) per ascus, ellipsoid or ovoid, (15)-18-25-(28) µm long, (10)-11-17 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Euoidium-type; not branched; basal cells 9.5-13 µm wide. Conidium Formation: Conidiogenous cells in chains. Conidia: Ellipsoid, ovoid, or doliiform; macroconidial (germ tubes at an end), not branched, 25-40 µm long, 14-22.5 µm wide; aseptate.

(report generated 04.Okt.2007)