Sawadaea polyfida var. japonica U. Braun & Tanda

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (02-09-03). Data set reviewer(s): Schubert K. (06-04-05); not revised.

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

Type Information: Basionym: Sawadaea polyfida var. japonica U. Braun & Tanda. Type: Sawadaea polyfida var. japonica U. Braun & Tanda.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells irregularly polygonal, ca. 5-20 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [444-445] (1987).

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

Ecology: Biotroph; phytopathogenic; growing on leaves, hypophyllous (usually) or amphigenous. Host or Phorophyte Taxonomy: Acer palmatum var. matsumurae Makino; Acer, Aceraceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered, (.1)-.15-.2 mm in diam.. Margin: External filaments present; uncinate or circinate (close), .25-1 µm long, 6-9-(11) µm in diameter, hyaline, very numerous, 100-240 per mm², growing on the upper half of the ascocarp, stiff and straight, smooth or rough, thick, ramified, dichotomously branched ((1-)2-3 times, deeply cleft, branched from the middle of the stalk upwards or sometimes even in the lower half), aseptate.

Asci: 14-38 asci per ascocarp, indistinctly stipitate, (60)-75-110 µm long, 40-60 µm wide; dehiscence unitunicate.

Ascospores: c. 8 per ascus, spores 6-8 per ascus, ellipsoid or ovoid, 18-26.5 µm long, 12.5-18 µm wide; septa absent.

(report generated 04.Okt.2007)