Collema leucocarpum Hook.f. & Taylor
Details
Collema leucocarpum Hook.f. & Taylor, London J. Bot. 3: 657 (1844)
Collema leucocarpum Hook.f. & Taylor
Biostatus
Nomenclature
Hook.f. & Taylor
Hook.f. & Taylor
1844
657
ICN
Collema leucocarpum Hook.f. & Taylor
species
Collema leucocarpum
Classification
Synonyms
Associations
Descriptions
Collema leucocarpum Hook.f. & Taylor
Thallus medium to large, to 10 cm diam., foliose, membranous, thin, ± rounded and adnate, ± deeply and broadly lobate, smooth, sometimes slightly and irregularly ridged or folded, pale olive-green to dark olive, lower surface concolorous or greyish-blue, matt or slightly glossy, without isidia. Lobes few, rounded or somewhat extended, imbricate, to 1.5 cm broad, sparsely lobulate, lobules ± rounded, margins entire and somewhat bent downwards or upwards. Apothecia numerous, scattered to dense, laminal or submarginal, sessile with constricted base or rather broadly adnate, 1.5 (rarely to 3.5) mm diam., disc plane to convex, strongly white-pruinose, seldom yellow-pruinose, thalline margin thin to moderately thick, entire, smooth or finely wrinkled, not prominent. Ascospores 6-8 per ascus, distichous to polystichous, straight or twisted in asci, broadly to narrowly fusiform, rarely ± broadly acicular, straight or curved with acute or obtuse ends, 6-8-celled sometimes distinctly constricted at septa, 30-65(-73) × 4.5-6.5(-8.5) µm. Pycnidia common, often abundant and dense, laminal and submarginal, immersed, ± globose, thicker than thallus, 170-260 µm diam., visible as dots or swellings on both sides of thallus, pale or concolorous with thallus.
Taxonomic concepts
Collema leucocarpum Hook.f. & Taylor
Collema leucocarpum Hook.f. & Taylor
Collema leucocarpum Hook.f. & Taylor
Collema nigrescens var. leurcocarpum (Hook.f. & Taylora) C.Bab.
Collema leucocarpum Hook.f. & Taylor
Synechoblastus leucocarpus (Hook.f. & Taylor) Müll.Arg.
Collema leucocarpum Hook.f. & Taylor
Collections
Metadata
15b21233-850d-4a32-ad05-3d5f45d3f551
scientific name
Names_Plants
1 January 2000
4 August 2009