Placopsis perrugosa (Nyl.) Nyl.
Details
Placopsis perrugosa (Nyl.) Nyl.
Placopsis perrugosa (Nyl.) Nyl.
Biostatus
Nomenclature
(Nyl.) Nyl.
Nyl.
Nyl.
1888
57
ICN
species
Placopsis perrugosa
Classification
Synonyms
Descriptions
Placopsis perrugosa (Nyl.) Nyl.
Thallus effigurate, lobate, orbicular to spreading, very closely attached, to 8 cm diam., saxicolous, prothallus absent. Marginal lobes discrete, expanded, to 3 mm long and 1.5 mm broad, irregularly branched, rounded or somewhat cuneate at apices. Upper surface entirely verrucose-papillate, cracked, with cracks 0.2-0.3 mm wide, delineating angular areolae to 1.3 mm diam., verruculae crowded, hemispherical, to 0.5 mm diam., borne on a continuous thalline substratum, matt, naked or rarely slightly white-pruinose, variable in colour, creamish, yellow-grey, brown-grey to olive-brown or brown-black, without isidia or soredia.Cephalodia scattered, sessile, flattened, suborbicular, to 2.5 mm diam., or effigurate, radially cracked, to 3 mm diam., or rarely warted-glomerulate and not effigurate, to 3.5 mm diam., yellowish- to red-brown, matt. Apothecia scattered, subpedicellate, rounded, to 1.5 mm diam., thalline margin prominent, entire or subcrenulate, disc plane, brown-pink or brown to black, matt, epruinose. Hymenium 100-200 µm tall, pale yellowish or yellow-brown in upper part. Paraphyses moderately thickened at apices. Hypothecium colourless or pale yellowish. Ascospores uniseriate, ellipsoid, 15-21 × 7-10 µm. Pycnidia immersed in thalline warts, ostioles punctiform, brown-black 0.1-0.2 mm diam. Conidia filiform curved or straight, 18-24 × 0.5 µm. Chemistry: Cortex K+ yellowish, C+ rose; medulla K+ yellow or -, C+ rose, Pd+ or -.
Taxonomic concepts
Lecanora endorhodea Zahlbr.
Placopsis perrugosa (Nyl.) Nyl.
Lecanora perrugosa Nyl.
Placopsis perrugosa (Nyl.) Nyl.
Placodium perrugosum (Nyl.) Müll.Arg.
Placopsis perrugosa (Nyl.) Nyl.
Placodium thaumastum (Stirt.) Müll.Arg.
Placodium thaumastum (Stirt.) Müll.Arg.
Placopsis perrugosa (Nyl.) Nyl.
Placopsis perrugosa (Nyl.) Nyl.
Placopsis perrugosa (Nyl.) Nyl.
Placopsis perrugosa (Nyl.) Nyl.
Squamaria perrugosa (Nyl.) Nyl.
Placopsis perrugosa (Nyl.) Nyl.
Squamaria thaumasta Stirt.
Placopsis perrugosa (Nyl.) Nyl.
Historic biostatus
Collections
Metadata
54872464-a044-4d6f-984f-d6517f07e86f
scientific name
Names_Plants
1 January 2000
11 October 2013