Placopsis parellina (Nyl.) I.M.Lamb
Details
Placopsis parellina (Nyl.) I.M.Lamb, Res. Norweg. Sci. Exped. Tristan da Cunha, 1937-1938,, 3 (1940)
Placopsis parellina (Nyl.) I.M.Lamb
Biostatus
Indigenous, non-endemic
Wild
New Zealand
Political Region
Recorded by de Lange et al. (2018) as assessed for the first time and listed as Data Deficient.
Nomenclature
(Nyl.) I.M.Lamb
Nyl.
I.M.Lamb
1940
3
ICN
species
Placopsis parellina
Classification
Subordinates
Synonyms
Descriptions
Placopsis parellina (Nyl.) I.M.Lamb
Thallus effuse or effigurate, spreading irregularly to 8 cm diam., saxicolous or terricolous. Marginal lobes (when present) ± flattened, closely attached, contiguous, separated by narrow cracks, 1-6 mm long, variously divided, rounded or subcrenulate at apices, continuous, or with some irregularly anastomosing cracks but not areolate. Upper surface irregularly wrinkled-warted or smooth, warts when well-developed ± rounded or subangular, 0.3-0.8 mm diam., often confluent, sometimes entirely squamulose, glaucous whitish or creamish, occasionally in part white-pruinose. Isidia absent. Soredia often present, scattered, rounded subglobose-erumpent, to 0.8 mm diam., concolorous with thallus. Cephalodia irregularly scattered, sessile, irregular, variously wrinkled, sometimes folded and radially cracked, to 2.5 mm diam., brownish or flesh-coloured, matt. Apothecia scattered, rounded, subpedicellate, thalline margin thick, entire, concolorous with thallus or pale pinkish, sometimes granular-pulverulent, epruinose, matt, disc plane, rose-red, red-brown or brown, matt. Hymenium 140-240 µm tall, yellowish-brown above. Paraphyses slightly swollen at apices. Ascospores uniseriate, ellipsoid, 17-28 × 8-14 µm. Pycnidia immersed, not common, indicated by minute yellowish or reddish spots. Conidia filiform, curved 17-25 × 0.5 µm. Chemistry: Cortex K-; medulla K-, C+ rose, Pd-.
Taxonomic concepts
Historic biostatus
Absent
New Zealand
Political Region
Formerly recorded from New Zealand as a very polymorphic species (Lamb 1947, Galloway 1985), [...] now regarded as a Chilean endemic, with the earlier supspecific forms ampliata, argillacea and microphylla now treated as independent species.
Collections
Metadata
c055f365-8d3d-46a4-b804-1dce272d9fbd
scientific name
Names_Plants
1 January 2000
8 July 2019