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Usnea xanthophana sensu Stirt.
Details
Nomenclature
Stirt.
Stirt.
1883
misapplication
ICN
species
Usnea xanthophana
Classification
Descriptions
Usnea xanthophana sensu Stirt.
Thallus fruticose, erect or pendulous, 4-6(-10) cm long, pale yellow, yellowish-white or greenish-yellow, non-pigmented, not blackened at base, corticolous. Branches terete, 1-2.5 mm diam., tapering towards apices, branching sympodial, rather open, lateral fibrils at right angles to main branches, rather sparse, primary and secondary branches papillate, ± articulate-cracked both at branch points and between branches, without isidia, pseudocyphellae or soredia. Apothecia common, subterminal, to 5 mm diam., disc concave at first then plane, distinctly marginate, pinkish or yellowish with a fine, white pruina, margins with radiating, long, straight or flexuous, robust, ray-like branchlets, exciple smooth. Ascospores 10 × 6 µm. Chemistry: Fumarprotocetraric and usnic acids.
Taxonomic concepts
Usnea xanthophana sensu Stirt.
Usnea xanthophana sensu Stirt.
Collections
Metadata
7b5d6407-37e4-458e-9872-2818c3aba786
scientific name
Names_Plants
1 January 2000
17 December 2010