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Sphaerotheca lappulae T. Z. Liu & Z. J. Xu

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Schubert K. @EXCL@ Kainz C. (06-03-21).

Nomenclature: Taxonomic rank: species. Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Sphaerotheca lappulae T. Z. Liu & Z. J. Xu. Type: Sphaerotheca lappulae T. Z. Liu & Z. J. Xu.

Taxonomic Literature: Taxonomic notes: + cleistothecia: cellulae parietis exterioris irregulariter angulatae, (11-)19-35(-42) µm diam. Liu T.Z. & Xu Z.J., Mycosystema 23(4): 464-465 (2004).

Biogeography: Continent: Asia-Temperate. Region(s): China (Neimongol).

Ecology: Biotroph; phytopathogenic; growing on stems, leaves, or inflorescences, amphigenous. Host or Phorophyte Taxonomy: Lappula heteracantha (Ledeb.) Gürke; Lappula, Boraginaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid (fusca brunnea), orbicular (globosa vel subglobosa), scattered or gregarious, .06-.08-(.095) mm in diam.. Margin: External filaments present (inferiore parte cleistothecii exortae, curvatae, crassitudo inaequabilis); mycelioid, straight, 40-200-(266) µm long, 3-8-(10) µm in diameter, pigmented (brunneae, raro basi brunneae, subbrunneae in apice), few, 4-14 per mm², smooth or verrucose (prope basim), thin, not ramified or rarely ramified, irregular, aseptate or septate (0-5-septatae).

Asci: 1 asci per ascocarp, globose (subglobosi, late ovales), not stipitate or indistinctly stipitate, 46-64 µm long, 38-54 µm wide; dehiscence unitunicate.

Ascospores: c. 8 per ascus, spores 8 per ascus, subglobose, ellipsoid, or ovoid, 13-19 µm long, 10-13 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Euoidium-type. Conidium Formation: Conidiogenous cells in chains. Conidia: Doliiform or cylindrical; macroconidial, not branched, 18-26 µm long, 12-16 µm wide; aseptate.

(report generated 04.Okt.2007)

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