Thysanothecium scutellatum (Fr.) D.J.Galloway
Details
Thysanothecium scutellatum (Fr.) D.J.Galloway in Galloway & Bartlett, Nova Hedwigia 36: 390 (1983)
Thysanothecium scutellatum (Fr.) D.J.Galloway
Biostatus
Nomenclature
(Fr.) D.J.Galloway
Fr.
D.J.Galloway
1983
390
ICN
species
Thysanothecium scutellatum
Classification
Descriptions
Thysanothecium scutellatum (Fr.) D.J.Galloway
Primary thallus squamulose, or ± nodular-papiliate, squamules ± dorsiventral, scattered to ± densely packed, imbricate, forming a spreading, diffract- areolate crust, minute, 0.05-0.5(-1.0) mm diam., margins crenate, becoming lobulate, convex and ± closely attached to substrate, to ascending, ± imbricate, whitish or pale greenish to greenish-yellow above, tinged brownish at apices, white below, often clothing base of pseudopodetia to 5 mm, on charred or decorticated wood. Pseudopodetia arising from margins or apices of primary squamules, at first simple, terete and uniformly corticate, at maturity fissured, grooved, ± canaliculate or partly hollow, formed of horny, cartilaginous nerve- like strands between which corticate granules and medullary hyphae are exposed, 1-2 mm wide at base, flaring to 2-6 mm wide at apices, 0.1-10(-15) mm tall. Cortex yellowish-green to brownish, distinctly grooved-striate, discontinuous, cartilaginous strands corticate, glossy, spaces between filled with corticate granules and medullary hyphae. Apothecia terminal often also subterminal on secondary branches, disc ± plane, rotund at first, becoming irregular- undulate, fan-shaped or deeply crenulate-lacerate, margins entire at first, becoming sinuous, crenate, persistent, distinctly raised, concolorous with thallus or paler, surface of disc smooth or very minutely scabrid, pale yellowish- green to pinkish-brown, not or rarely minutely white-pruinose. Ascospores ellipsoid, straight or slightly curved, 5-8 × 3 µm. Pycnidia marginal on primary thallus, black, cylindrical to bottle-shaped, with an apical gaping ostiole 0.05-0.08 mm wide. Conidia not seen. Chemistry: Cortex and medulla K-, C-, KC-, Pd-. Divaricatic and usnic acids.
Taxonomic concepts
Baeomyces hyalinus Taylor
Thysanothecium scutellatum (Fr.) D.J.Galloway
Cladonia scutellata Fr.
Thysanothecium scutellatum (Fr.) D.J.Galloway
Thysanothecium hyalinum (Taylor) Nyl.
Thysanothecium scutellatum (Fr.) D.J.Galloway
Thysanothecium scutellatum (Fr.) D.J.Galloway
Thysanothecium scutellatum (Fr.) D.J.Galloway
Thysanothecium scutellatum (Fr.) D.J.Galloway
Thysanothecium scutellatum (Fr.) D.J.Galloway
Thysanothecium scutellatum (Fr.) D.J.Galloway
Thysanothecium scutellatum (Fr.) D.J.Galloway
Thysanothecium scutellatum (Fr.) D.J.Galloway
Collections
Metadata
c9503e37-ff37-41d0-a93f-65129e8b1f00
scientific name
Names_Plants
1 January 2000
3 April 2020