Roccellodea Darb. (1932)

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Tehler A. (95-11-27); revised; to be published after submission.

Nomenclature: Current taxonomic status: basionymous or accepted. Taxonomic rank: genus. Number of known taxa within this rank: 1. Roccellodea. Roccellaceae Chevall. (1826); Arthoniales.

Type Information: Type: Roccellodea nigerrima Darb.

Taxonomic Literature: Darbishire O.V., Ann. Cryptog. Exot. 5: 153-159 (1932).

Ecology: Biotroph; lichenized; substrate non-calciferous.

Lichen Photobionts: Primary photobiont present; trentepohlioid. Secondary photobiont absent.

Thallus: Fruticose, not subdivided parts. Upper Surface: White; special structures absent or present:; not pseudocyphellate; eciliate; without hairs; not isidate; not sorediate or sorediate; not cephalodiate; not lobulate; without granules granules, without thalloconidia thalloconidia. Lower Surface: Attached by holdfasts; special structures absent.

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular, forming all across the thallus surface, not emerging. Margin: Indistinct. Epithecium: Apical cells brownish yellow. Interascal Hyphae: Present, distinctly branched, not or scarcely anastomosed. Hypothecium: White.

Ascospores: c. 8 per ascus, fusiform, 10-14 µm long, 3-4 µm wide, obtuse or aciculate; septa present; transversally septate, 3-transversally septate; wall thin, not thickened at the septum, hyaline, in Lugol's Solution negative, wall not ornamented.

Conidiomata: Absent resp. not observed or present; pycnidial; immersed, formed all accross the thallus surface.

Conidia: Bacilliform.

(report generated 04.Okt.2007)