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Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-08-02). Data set reviewer(s): Schubert K. (06-04-05); revised.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Synonyms: Ovulariopsis cordiae J. M. Yen & Chin C. Wang (anamorph); Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Phyllactinia thirumalachari Payak. Type: Phyllactinia thirumalachari Payak.

Taxonomic Literature: Taxonomic notes: +conidiophores foot-cells cylindric;+ascomata outer wall cells obscure, irregularly shaped;. Braun U., Beih. Nova Hedwigia 89: 1-700 [591] (1987).

Biogeography: Continent: Asia-Temperate and Asia-Tropical. Country or state(s): Taiwan; India.

Ecology: Biotroph; phytopathogenic; growing on leaves, hypophyllous. Host or Phorophyte Taxonomy: Cordia dichotoma G. Forst.; Cordia, Boraginaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or in loose groups, (.19)-.22-.3-(.34) mm in diam.. Margin: External filaments present (basal swelling ca. 25-40 µm diam., apex sometimes with proliferations); not interlaced, straight, .8-1 µm long, numerous, 10-25 per mm², growing between the lower and upper hald of the ascocarp, stiff and straight, not ramified.

Asci: 20-35 asci per ascocarp, distinctly stipitate, 65-95 µm long, 24-35 µm wide; dehiscence unitunicate (numerous).

Ascospores: 1–2 to c. 4 per ascus, spores 2-(3) per ascus, ellipsoid or ovoid, 25-40 µm long, 15-23 µm wide; septa absent.

Conidiophores: Ovulariopsis-type (conidiophores erect, arising from the external mycelium, cylindric, filiform, ca. 100-240 µm long, 7-12 µm wide); not branched; conidiophore cells 100-240 µm long, basal cells 70-130 µm long, 7-8 µm wide. Conidium Formation: Conidiogenous cells single. Conidia: Clavate; macroconidial, not branched, 50-85 µm long, 15-25 µm wide; aseptate.

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