Comprehensive Description
provided by Smithsonian Contributions to Botany
Pseudoparmelia gerlachei
Parmelia gerlachei Zahlbruckner, 1929:137 [type collection: based on Parmelia antarctica Vainio].
Parmelia antarctica Vainio, 1903:13 [type collection: Cap van Beneden, Terre de Danco, Gerlache 226 (TUR, Vainio herbarium number 2839, lectotype); not P. antarctica Bitter, 1901:248 (= Hypogymnia)].
Xanthoparmelia gerlachei (Zahlbruckner) Hale, 1974:487.
DESCRIPTION.—Thallus closely adnate on rock, rather coriaceous, pale greenish yellow, 3–5 cm broad; lobes subirregular, crowded, apically rotund, 2–4 mm wide; upper surface dull, sometimes lightly pruinose, broadly rugose or foveolate, appearing somewhat inflated, soredia developing in orbicular to irregular laminal, capitate soralia 2–4 mm in diameter; lower surface black and moderately rhizinate, papillate in a narrow brown marginal zone. Apothecia not found.
CHEMISTRY.—Cortex K−, medulla K−, C−, KC−, P+ red; usnic acid and either physodalic acid or protocetraric acid or a mixture of both.
DISTRIBUTION.—Andean mountain chain and Antarctica.
HABITAT.—On rocks in exposed paramo or tundra at 2900–3800 m in the Andes and to sea level in Antarctica.
- bibliographic citation
- Hale, Mason E., Jr. 1976. "A Monograph of the Lichen Genus Pseudoparmelia Lynge (Parmeliaceae)." Smithsonian Contributions to Botany. 1-62. https://doi.org/10.5479/si.0081024X.31
