Erysiphe chifengensis T. Z. Liu & U. Braun

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Schubert K. @EXCL@ Kainz C. (06-12-19).

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Currently accepted name Erysiphe chifengensis T. Z. Liu & U. Braun. Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Erysiphe chifengensis T. Z. Liu & U. Braun. Type: Erysiphe chifengensis T. Z. Liu & U. Braun.

Taxonomic Literature: Taxonomic notes: + hyphae (2-)3-7 µm wide, thin-walled, hyaline, smooth; appressoria almost nipple-shaped to usually lobed; ascomatal peridial wall cells irregularly polygonal, 6-24 µm diam.,. Liu T.Z. & Braun U., Nova Hedwigia 83(3-4): 493-497 (2006).

Biogeography: Northern hemispheric. Continent: Asia-Temperate. Region(s): China (Inner Mongolia).

Ecology: Biotroph; phytopathogenic; growing on leaves (usually without any evident symptoms, forming thin white patches, evanescent to persistent), mostly epiphyllous or amphigenous. Host or Phorophyte Taxonomy: Abelia biflora Turcz.; Abelia, Caprifoliaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid (dark brown), orbicular (depressed globose), scattered or gregarious, .08-.14-(.164) mm in diam.. Margin: External filaments present; not interlaced, straight (tips of ultimate branchlets stright, obtuse to subtruncate), (55)-70-140-(190) µm long, 6-10-(12) µm in diameter, hyaline or pigmented (at the very base below the septum), numerous, (5)-10-20-(23) per mm², growing between the lower and upper hald of the ascocarp, stiff and straight (straight or curved), smooth or rough, thin or moderatly thick, ramified, dichotomously branched (4-6 times, mostly rather regular and compact, primary branches usually short, the following branches not appearing digitate), aseptate or septate (0-2-).

Asci: 5-10-(13) asci per ascocarp, clavate (ovate-saccate), not stipitate or distinctly stipitate, (50)-55-70-(77) µm long, 30-45.5 µm wide; dehiscence unitunicate.

Ascospores: c. 4 or c. 8 (mainly 7-spored, yellowish) per ascus, spores (4)-6-7-(8) per ascus, ellipsoid or ovoid, 16.5-23 µm long, 10-14 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched (erect, cylindrical, foot-cells followed by a shorter cells, only few conidiophores observed); basal cells 20-30 µm long, 6-7 µm wide. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid, ovoid, or cylindrical (primary conidia ellipsoid-ovoid, secondary conidia ellipsoid-cylindrical); macroconidial (germ tubes subterminal, short), not branched, 21-31 µm long, 10-16.5 µm wide; without distinct fibrosin body fibrosin bodies.

(report generated 04.Okt.2007)