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. (00-08-01). Data set reviewer(s): Schubert K. (06-07-24); revised.

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

Type Information: Basionym: Oidium chrysanthemi Rabenh. Type: Oidium chrysanthemi Rabenh.

Taxonomic Literature: Taxonomic notes: +hyphae flexuous, branching at right angles near a septum, hyphal cells (60-)80-100(-105) x (5-)6.5-7.5(-8) µm; +appressoria unlobed, indistinct, occasionally nearly nipple-shaped, 5-12 µm wide;+conidiophores foot-cells followed by 1-2 shorter cells of about 20-35 µm in length;+haustoria globose, 17.5-22.5 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [604] (1987); Braun U., The powdery mildews (Erysiphales) of Europe. - 1-337. Jena, Stuttgart, New York (1995).

Biogeography: Nearly cosmopolitan. Country or state(s): Finland, Benelux (Belgium & Luxembourg), Germany, Hungary, Poland, Switzerland (incl. Liechtenstein), France (excl. Corsica), Portugal, Spain (incl. Andorra & Monaco), Italy (incl. San Marino & The Vatican City, excl. Sicily, Sardinia), Romania, Belarus, Baltic States (Estonia, Lithuania, Latvia), and Ukraine.

Ecology: Biotroph; phytopathogenic; growing on stems, leaves, and inflorescences. Host or Phorophyte Taxonomy: Chrysanthemum sp.; Chrysanthemum, Compositae.

Conidiophores: Not branched ((60-)105-190(-230) x 10-12.5 µm); basal cells 75-130-(140) µm long, 11-12.5-(15) µm wide. Conidium Formation: Conidiogenous cells in chains. Conidia: More or less ellipsoid, doliiform, or cylindrical; macroconidial (germ tubes on a side of the spore or apical, simple, rarely branched, short to long, terminating in an unlobed or slightly lobed appressorium), not branched, rounded at both ends, 35-50-(80) µm long, 16-22.5-(30) µm wide; aseptate; without distinct fibrosin body fibrosin bodies.

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