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Phacopsis oxyspora (Tul.) Triebel & Rambold var. oxyspora

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. & Triebel D. (94-11-15). Data set reviewer(s): Kainz C. (00-12-22 & 03-04-15); to be published after submission; 94-11-15.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Phacopsis. Parmeliaceae Zenker (1827).

Taxonomic Literature: Taxonomic notes: vegetative hyphae colorless;. Triebel D. & Rambold G. 1995. A Conspectus of the Genus Phacopsis
(Lecanorales). The Bryologist 98(1): 71-83.

Biogeography: Continent: Asia-Temperate, Europe, and Northern America (U.S.A., Arizona, Cochise Co.: Nash 3795 (ASU) [on Parmelia sulcata]; U.S.A., Arizona, Coconino Co.: Nash 3507 (ASU) [on Parmelia sulcata]; U.S.A., Arizona, Pima Co.: Nash 21159 (ASU) [on Parmelia sulcata];).

Ecology: Biotroph; lichenicolous.

Medulla: Iodine reaction in Lugol's solution positive.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Forming independently from the host thallus or mycelium, not emerging, becoming adnate (becoming erumped), .2-.3-(.45) mm in diam.. Margin: Indistinct. Disk: Plane to weakly convex, brown (to dark brown, mat to shiny). Exciple: Pale brown or white (excipulum ca. 10-30(-40) µm thick, composed of more or less isodiametric cells of ca. 3-7 µm diam., lumina ca. 1.5-3 µm (textura angularis)). Epithecium: Apical cells distinctly swollen (apical cells with small, brown to dark-brown-pigmented caps, ca. 3-5 µm thick); brown (to pale brown, 15-20 µm tall). Hymenium: 55-65 µm high; pale brown or white. Interascal Hyphae: Scarcely branched (scarcely branched, ca. 2-3 µm thick), not or scarcely anastomosed (scarcely anastomosed). Hypothecium: Pale brown (hypothecial hyphae exhibit an I+ violet reaction) or white. Hypothecial Extension: Present.

Asci: Dehiscence lecanoralean (43-55 x 14-19 µm).

Ascospores: c. 8 per ascus, ellipsoid (to lemon-shaped), (13)-16-18-(21) µm long, (5)-5.5-6.5-(7) µm wide, aciculate (mostly); wall thin (ca. 0.3 µm thick), not ornamented (ca. 0.3 µm thick).

Conidiomata: Present; immersed.

Pycnidia: Globular; wall brown (basally subcolorless to pale brownish, pseudoparenchymatic, ca. 10-15(-20) µm thick, composed of 3-4 wall layers; Phialides colorless, 9-11 x 3-4 µm). Conidia: Bacilliform; 5.5-6 µm long; .5-1 µm wide.

(report generated 04.Okt.2007)

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