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. (00-07-26). Data set reviewer(s): Schubert K. (06-03-22); revised.

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

Type Information: Basionym: Microsphaera azaleae U. Braun. Type: Microsphaera azaleae U. Braun.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells irregularly polygonal, ca. 10-25(-30) µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [394] (1987).

Biogeography: Continent: Europe and Northern America (USA, Canada). Country or state(s): Germany; New York (USA), Delaware (USA), and District of Columbia (USA). Checklist records: United States and Canada (continental).

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Rhododendron nudiflorum (L.) Torr.; Rhododendron, Ericaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, .1-.13 mm in diam.. Margin: External filaments present; recurved (tips distinctly recurved, rarely forked in the lower half), 1-1.5-(2) µm long, 6-10 µm in diameter, hyaline, numerous, 10-40 per mm², growing between the lower and upper hald of the ascocarp, flexuose or stiff and straight, thin or thick (towards the base), ramified, dichotomously branched (4-6 times regularly and closely), aseptate or septate (a single septum at the base).

Asci: 4-10 asci per ascocarp, not stipitate or indistinctly stipitate, 35-60 µm long, 30-50 µm wide; dehiscence unitunicate.

Ascospores: c. 4 to c. 8 per ascus, spores 4-6-(7) per ascus, ellipsoid or ovoid, 17-28 µm long, 10-15 µm wide; septa absent.

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