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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. Taxonomic rank: species. Synonyms: Erysiphe andina (Speg.) U. Braun; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Erysiphe taurica var. andina Speg. Type: Erysiphe taurica var. andina Speg.

Taxonomic Literature: Taxonomic notes: Mycelium Leveillula-like.+appressoria nipple-shaped;+ascocarp outer wall cells obscure, irregularly shaped, ca. 10-25 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [259] (1987).

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Euphorbia sp.; Euphorbia, Euphorbiaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, in loose groups or gregarious, .125-.18-(.25) mm in diam.. Margin: External filaments present (short, shorter than the cleistothecial diam., rarely exceeding); interlaced with each other or interwoven with surrounding mycelium, mycelioid, straight, 4-10-(14) µm in diameter, hyaline or pigmented (later, yellowish to brown throughout), numerous, growing all across the lower half of the ascocarp, smooth or somewhat rough, thin, not ramified, septate.

Asci: 10-25 asci per ascocarp, distinctly stipitate, 50-80 µm long, 24-40 µm wide; dehiscence unitunicate.

Ascospores: 1–2 per ascus, spores 2 per ascus, ellipsoid or ovoid, 24-30 µm long, 12-15 µm wide; septa absent.

Conidiophores: Euoidium-type; not branched. Conidium Formation: Conidiogenous cells in chains. Conidia: Ovoid or cylindrical; macroconidial (length and width measured on dry material), not branched, 25-34 µm long, 12-17.5 µm wide; aseptate.

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