Botanische Staatssammlung München © 1995–2008
Data remain intellectual property of the data set authors.

Xerotrema Sherwood & Coppins (1980)

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set not revised; to be published after submission.

Nomenclature: Current taxonomic status: basionymous or accepted. Taxonomic rank: genus. Number of known taxa within this rank: 1. Xerotrema. Odontotremataceae D. Hawksw. & Sherwood (1982); Ostropales.

Type Information: Type: Xerotrema megalosporum Sherwood & Coppins.

Taxonomic Literature: Hawksworth D.L. in: Purvis O.W. et al. (eds), The Lichen Flora of Great Britain and Ireland, London (1992); Sherwood M.A. & Coppins B.J., Notes R. Bot. Gard. Edinburgh 38: 367-371 (1980).

Biogeography: Checklist records: Great Britain and United States and Canada (continental).

Ecology: Biotroph or saprobic; algicolous or lichenized; lignicolous.

Lichen Photobionts: Primary photobiont absent or present; chlorococcal and trentepohlioid. Secondary photobiont absent.

Thallus: Indistinct.

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, soon sessile. Margin: External filaments absent. Periphyses: Present. Epithecium: Apical cells brown. Interascal Hyphae: Present, scarcely branched to distinctly branched, not or scarcely anastomosed. Hypothecium: White.

Ascospores: 1–2 per ascus, oblong, 90-170 µm long, 22-40 µm wide, obtuse; septa present; both transversally and longitudinally; wall thin, not thickened at the septum, hyaline, in Lugol's Solution negative, wall not ornamented.

Conidiomata: Absent resp. not observed or present.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)

In case that additional characters and states are required to be included in this data set, consult the LIAS Instructions to Participants and follow the procedures described there.