Coniocybe gracillima Vain.
Details
Nomenclature
Vain.
Vain.
1881
97
ICN
Coniocybe gracillima Vain.
species
Coniocybe gracillima
Classification
Descriptions
Coniocybe gracillima Vain.
Thallus endosubstratic to episubstratic, when episubstratic minutely granular, pale greyish-green. Photobiont: . Apothecia 1.5-2.5 mm high, 24-40 times as high as width of stalk. Stalk distinctly flexuous, 0.05-0.07 mm diam., black in lower part, ± reddish-brown-pruinose in upper part. Stalk of periclinally arranged, medium brown, undulating and weakly sclerotized hyphae. Capitulum lenticular to subglobose, or spherical, 0.19-0.34 mm diam., with a dense reddish-brown pruina on lower side. Outer surface of excipulum frequently wrinkled. Excipulum 40-80 µm thick, consisting of sparingly branched, periclinally arranged, medium-brown hyphae. Excipulum covering lower third of capitulum, becoming less distinct in old apothecia with voluminous mazaedium. Pruina on excipulum and upper part of stalk dissolving in K and soon precipitating feather-like or plate-like crystals of a violet-red colour. Hypothecium pale brown, strongly convex, 50-95 µm high. Asci cylindrical, 12.9-16.5 × 2.2-3.2 µm, well-stalked, spores uniseriate or more rarely biseriate. Asci formed singly. Ascospores spherical to subglobose or broadly ellipsoid, medium brown, smooth or with few, irregular cracks. Spherical spores 2.6-3.8 µm diam. Chemistry: Thallus K-, C-, KC-, Pd-. Apothecia with ?quinonoid pigment dissolving in K and precipitating feather-like or plate-like, violet-red crystals.
Taxonomic concepts
Coniocybe gracillima Vain.
Coniocybe gracillima Vain.
Metadata
5ad99d2a-5635-424b-92fb-62ed1b92a005
scientific name
Names_Plants
11 April 2006
3 March 2009