Microcalicium conversum Tibell
Details
Microcalicium conversum Tibell (1978)
Microcalicium conversum Tibell
Biostatus
Nomenclature
Tibell
Tibell
1978
237
ICN
Microcalicium conversum Tibell
species
Microcalicium conversum
Classification
Descriptions
Microcalicium conversum Tibell
Growing on other species of Caliciales or on free-living colonies of algae or possibly saprophytically on lignum. Apothecia sessile to subsessile, very variable in size and shape, short cylindrical to obconical or ± distinctly stalked, 0.13-0.36 mm high and 0.16-0.44 mm diam. Mazaedium only moderately protruding beyond edge of apothecium. Paraphyses sclerotized, persisting in mazaedium. Excipulum in outer part dark brown, consisting of ± reticulately arranged, thick-walled cells. Innermost part of excipulum ± yellow to yellowish-brown. Asci when mature, 1-septate, narrowly ellipsoid to cylindrical, 8.9-11.1 × 2.8-3.4 µm, with distinct ornamentation of spirally-arranged ridges. Pycnidia 0.04-0.06 mm in diam. Conidia narrowly ellipsoid, 2-3 × 1 µm. Chemistry: Apparently the same aeruginose pigment in the apothecia and spores as in the other species of the genus. This pigment reacts K+ pale brown and reverts to intense green when excess acid is added, but parts of the excipulum remain yellowish-brown also in dilute nitric acid. Structure of the pigment not known.
Taxonomic concepts
Microcalicium conversum Tibell
Microcalicium conversum Tibell
Microcalicium conversum Tibell
Collections
Metadata
9dd145b1-6a7a-4976-91be-28b2ea7cc83c
scientific name
Names_Plants
1 January 2000
1 November 2010