Botanische Staatssammlung München © 1995–2008
Data remain intellectual property of the data set authors.

The description has been generated directly from a database. In cases of errors and insufficiencies consult the corresponding LIAS data entry and revision forms to make the necessary modifications. Changes will appear in the subsequent update of data entry forms and natural language descriptions. [To verify the actual status of the pages, select the reload frame function in the context menu!]
These pages are XHTML compatible designed. May be that problems arise with older web browser versions.

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-27). Data set reviewer(s): Schubert K. (06-01-26); revised.

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

Type Information: Basionym: Microsphaera pulchra Cooke & Peck. Type: Microsphaera pulchra Cooke & Peck.

Taxonomic Literature: Taxonomic notes: + conidiophores 3-celled;+ascomata outer wall cells irregularly polygonal, ca. 10-25 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [428-429] (1987).

Biogeography: Continent: Asia-Temperate and Northern America (USA: Mass. to N.C., Ill., Wisc.; Canada). Country or state(s): Japan; Idaho (USA), Illinois (USA), Wisconsin (USA), Connecticut (USA), Massachusetts (USA), Georgia (USA), and North Carolina (USA). Checklist records: United States and Canada (continental).

Ecology: Biotroph; phytopathogenic; growing on leaves. Host or Phorophyte Taxonomy: Cornus alternifolia L.; Cornus, Cornaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or gregarious, .08-.13 mm in diam.. Margin: External filaments present; setiform, recurved (tips of the ultimate branchlets distinctly recurved), 1-2 µm long, 7-10 µm in diameter, hyaline or pigmented (brown at the base), numerous, (4)-8-22 per mm², growing between the lower and upper hald of the ascocarp, stiff and straight (mostly, straight to curved), smooth or rough, thin (above, thick-walled towards the base, sometimes thick-walled throughout) or thick, ramified, dichotomously branched (3-6 times, closely and regularly, occasionally forked in the lower half, tips distinctly recurved), aseptate or septate (0-1-septate).

Asci: 3-8 asci per ascocarp, not stipitate (rarely) or distinctly stipitate, 40-75 µm long, 30-55 µm wide; dehiscence unitunicate.

Ascospores: c. 4 to c. 8 per ascus, spores 4-8 per ascus, ellipsoid or ovoid, 14-28 µm long, 10-15 µm wide; septa absent.

Conidiophores: Pseudoidium-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: More or less ellipsoid; macroconidial, not branched, 23-34 µm long, 10-15 µm wide; aseptate.

In case that additional characters and states are required to be included in this data set, consult the LIAS Instructions to Participants and follow the procedures described there.

LIAS Home