Collema fragrans (Sm.) Ach.
Details
Collema fragrans (Sm.) Ach., Syn. Meth. Lich. 311 (1814)
Nomenclature
(Sm.) Ach.
Sm.
Ach.
1814
311
ICN
species
Collema fragrans
Classification
Descriptions
Collema fragrans (Sm.) Ach.
Thallus very small, to 0.5 cm diam., foliose, ± rounded, fixed to substrate at centre, easily loosened, deeply lobate, dark olive-green sometimes brownish or blackish, lower surface concolorous or paler or greyish-blue, matt, epruinose, without isidia. Lobes few, rosette-forming, free or imbricate, rounded, or somewhat extended, 0.3-1.5 mm broad, not swollen, entire or crenate, ± plane, canaliculate, horizontal, adnate or not, occasionally ascending and ± erect, smooth, or with globular, isidia-like papillae or terete to flattened lobules at margins and on lamina. Thalli very numerous and crowded, somewhat pulvinate. Apothecia generally ± numerous, crowded centrally, sessile, constricted at base, 0.4-0.7 mm diam., disc plane to concave, red to red-brown or blackish-brown, slightly glossy, smooth, epruinose, thalline margin thin to moderately thick, sometimes disappearing, entire or rarely papillate, sometimes lobulate, proper margin thin, pale ± persistent. Ascospores 8, rarely 4 per ascus, ± distichous, oval or sub-oblong to ovoid or ellipsoid with rounded to obtuse ends, submuriform with 2-5 transverse septa often constricted at septa, 16-30 × 8.5-17 µm. Pycnidia common, numerous, ± laminal, immersed, ± globose, pale, to 215 µm diam.
Taxonomic concepts
Collema fragrans (Sm.) Ach.
Collema fragrans (Sm.) Ach.
Collema fragrans (Sm.) Ach.
Metadata
07041ecd-ebc4-4845-8d83-f7764b5a712b
scientific name
Names_Plants
1 January 2000
31 May 2019