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

Leveillula helichrysi V. P. Gelyuta & Simonyan

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

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

Type Information: Basionym: Leveillula helichrysi V. P. Gelyuta & Simonyan. Type: Leveillula helichrysi V. P. Gelyuta & Simonyan.

Taxonomic Literature: Taxonomic notes: + ascomata outer peridial cell 5-25 µm diam., angular-irregular to sinuous in outline, dark brown. Boyle H. & Braun U., Mycologia Balcanica 2: 179-180 (2005).

Biogeography: Northern hemispheric. Continent: Europe. Country or state(s): Germany, Poland?, France (excl. Corsica) (?), and Ukraine.

Ecology: Biotroph; phytopathogenic; growing on leaves. Host or Phorophyte Taxonomy: Helichrysum arenarium L.; Helichrysum, Compositae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, not emerging (immersed in the dense tomentum of the host leaves), .13-.19 mm in diam.. Margin: External filaments present; mycelioid (shorter than the diameter of the fruit boda), straight, 4-10 µm in diameter, hyaline and pigmented, numerous, growing all across the lower half of the ascocarp, thin, not ramified and ramified, aseptate and septate.

Asci: 5-15 asci per ascocarp, indistinctly stipitate, 60-100 µm long, 35-50 µm wide; dehiscence unitunicate (saccate).

Ascospores: 1–2 per ascus, spores 2 per ascus, broadly ellipsoid (ends broadly rounded) or ovoid, 25-40 µm long, 14-25 µm wide; septa absent; wall hyaline.

Conidiomata: Present; hyphomycetous.

Conidiophores: Oidiopsis-type (conidiophores emerging through stomata, erect, filiform, flexuous, long, pluriseptate, hyaline, thin-walled, smooth or almost so); not branched; conidiophore cells up to 250 µm long, basal cells 6-10 µm wide. Conidium Formation: Conidiogenous cells single. Conidia: Broadly ellipsoid (primary conidia), obovoid, doliiform, cylindrical, or clavate; macroconidial (dimorphic, primary and secondary conidia, primary conidia broadly ellipsoid-obovoid, 40-50 × 16-22 µm, length/width ratio 2,2-2,7, apex broadly rounded, base subtruncate, secondary conidia subcylindrical, rarely subclavate-doliiform, (35-)40-55(-60) × 14-20 µm, length/width ratio 2,2-3,7 µm, ends rounded to subtruncate), not branched, rounded at one end or truncate at one end (base subtruncate (primary conidia)), 40-50 µm long, 16-22 µm wide; aseptate; cell wall hyaline.

(report generated 04.Okt.2007)

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.