Erysiphe braunii Y. Nomura

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Schubert K. Data set reviewer(s): Schubert K. (06-03-20); revised.

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

Type Information: Basionym: Erysiphe braunii Y. Nomura. Type: Erysiphe braunii Y. Nomura.

Taxonomic Literature: Taxonomic notes: + cleistothecia: cellulae peridii irregulariter angulatae, 12-16 × 10-14 µm. Nomura Y., Taxonomical study of Erysiphaceae of Japan. - 1-281 [174-176]. Tokyo (1997).

Biogeography: Continent: Asia-Temperate. Country or state(s): Japan.

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Saussurea nipponica Miq.; Saussurea, Compositae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular (globose to sphaerical), scattered or in loose groups, .09-.13 mm in diam.. Margin: External filaments present; mycelioid, straight, 100-550 µm long, 3.5-6 µm in diameter, hyaline or pigmented (brunneae vel sub-brunneae, interdum ad medio ad apicem hyalinae), numerous, 18-36 per mm², growing at the ascocarp base, flexuose (curvatae, saepe ad basim 2-3 spiraliter laxe volutae), thin, not ramified, not branched or irregular, septate (2-9(-12)-septate).

Asci: 6-16 asci per ascocarp, globose (ellipsoidei vel longi-ovati), distinctly stipitate, 38-52 µm long, 25-38 µm wide; dehiscence unitunicate.

Ascospores: 1–2 to c. 4 per ascus, spores 2-3 per ascus, ovoid (oblong-), 17-25 µm long, 12-18 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched (recta, leniter curvata); conidiophore cells 80-110 µm long, basal cells 50-65 µm long, 10-12 µm wide. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid or ovoid; macroconidial, not branched, 34-47 µm long, 17-23 µm wide; aseptate.

(report generated 04.Okt.2007)