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Oidium jacarandigena Delhey, U. Braun & Kiehr

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: Oidium jacarandigena Delhey, U. Braun & Kiehr. Type: Oidium jacarandigena Delhey, U. Braun & Kiehr.

Taxonomic Literature: Taxonomic notes: + hyphae superficial, sparingly branched, 2-5 µm wide, hyaline, smooth, septate, thin-walled; appressoria solitary or in opposite pairs, nipple-shaped to lobed, 3-6 µm wide. Delhey R., Braun U. & Kiehr M., Schlechtendalia 10: 79-90 [80-81] (2003).

Biogeography: Continent: Southern America (Argentina, Bahia Blanca).

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Jacaranda mimosifolia D. Don; Jacaranda, Bignoniaceae.

Reproduction Strategy: Only known as sterile, asexually reproducing form.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type (conidiophores solitary, arising from superficial hyphae, erect, straight or rarely slightly curved, foot-cells cylindrical, followed by 1-2 shorter cells or cells of about the same length); not branched; basal cells 20-25 µm long, 6-9 µm wide. Conidium Formation: Conidiogenous cells single or in chains (often adhering in loose chains). Conidia: Ellipsoid, obovoid (primary conidia), doliiform, or cylindrical; macroconidial (primary conidia obovoid, apex broadly rounded, base subtruncate; l/w ratio of secondary conidia 1,5-3,2, thin-walled, fresh conidia with oil-drops), not branched, rounded at both ends (to subtruncate), (20)-25-35-(38) µm long, 10-18 µm wide; aseptate; cell wall hyaline.

(report generated 04.Okt.2007)

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