Podosphaera caricae-papayae (Tanda & U. Braun) U. Braun & S. Takam.

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. Data set revised.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Synonyms: Sphaerotheca caricae-papayae S. Tanda & U. Braun; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Sphaerotheca caricae-papayae S. Tanda & U. Braun.

Taxonomic Literature: Taxonomic notes: +appressoria nipple-shaped;
+conidiophores erect, 80-185 x 15-18
µm;
+ascocarp outer wall cells evident, irregularly shaped, 30-
60(-70) x 10-30(-40);
+ascoc. ext. fil. length variable, ca. 40-325
µm;. Braun, U., A monograph of the Erysiphales (powdery mildews). Beih. Nova Hedwigia 89: 1-700 [xxx] (1987).

Biogeography: Continent: Africa, Asia-Temperate, Australasia, Europe (Portugal; perfect state only known from type collection (Japan); exact distribution is unknown, because it is unclear if all records of), Northern America, and Southern America.

Ecology: Biotroph; phytopathogenic; growing on stems or leaves, amphigenous. Host or Phorophyte Taxonomy: Caricaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, gregarious, .08-.11 mm in diam.. Margin: External filaments present; .5-3 µm long, (4)-5-10-(13) µm in diameter, pigmented (brown throughout or paler upwards), few, 3-8 per mm², growing all across the lower half of the ascocarp, smooth, thin, not ramified, aseptate or septate (few septa).

Asci: 1 asci per ascocarp, sub-globose or broadly clavate, not stipitate, 65-112 µm long, 55-80 µm wide; dehiscence unitunicate.

Ascospores: c. 8 (ascospores early developed, asci usually mature) per ascus, spores 6-8 per ascus, ellipsoid or ovoid, (13)-18-30 µm long, 11-18.5 µm wide; septa absent; wall thin, remaining hyaline, hyaline, not ornamented.

Conidiomata: Present; hyphomycetous (conidiophores erect foot cells cylindric).

Conidiophores: Oidium-type; basal cells 30-40 µm long, 11-12 µm wide. Conidium Formation: Conidiogenous cells in chains. Conidia: Ellipsoid, ovoid, or doliiform; macroconidial, not branched, 23-33 µm long, 14-21 µm wide; aseptate; with distintly visible fibrosin body fibrosin bodies.

(report generated 04.Okt.2007)