Hypotrachyna parasinuosa Sipman & Palice
Mycobank MB 517786
Thallus foliose, corticolous, ca. 5 cm wide, loosely adnate, not coriaceous, dichotomously to subdichotomously lobate, ciliate. Lobes sublinear to subirregular, mostly separate, 2–3 mm wide, plane to slightly convex, with subtruncate apices. Upper surface greenish yellow with usually a black marginal rim, slightly shiny, epruinose, emaculate, sorediate, lacking isidia, pustules, dactyls or lobules. Soralia apical or subapical, more or less capitate or spreading over the surface, pale yellow but becoming blackened with age, with granular soredia ca. 60 µm in diam. Medulla white. Lower surface black, paler and brown at the lobe tips. Rhizines absent. Marginal cilia present, black, somewhat dendroid, 1–2 mm long, near the base about 0.2 mm thick, 1–3 times furcately branched. Apothecia and pycnidia not seen. Secondary chemistry: upper cortex K–, C–, KC+ yellow, P–, UV–; medulla K+ yellow turning red, C–, KC–, P+ orange-red, UV–; upper cortex with usnic acid (minor), medulla with salazinic acid (major), consalazinic acid (minor), norstictic acid (trace) and protocetraric acid (trace) (HPLC by J. A. Elix).
Hypotrachyna parasinuosa resembles H. sinuosa closely in lobe configuration, presence of soralia, and chemistry (Sipman et al., 2009), and differs in the presence of furcately branched cilia and the absence of rhizines. For further comments see under H. paracitrella.
The epithet reflects the similarity to Hypotrachyna sinuosa (Taylor) Hale (Sipman et al., 2009).
Known so far only from a single specimen in prov. Tungurahua, Ecuador, on humid, dwarfed forest at 3750–3800 m.
Type:—ECUADOR. Tungurahua. Langanates National Park, Cordillera Llanganates, ca. 5 km WSW of Cerro Hermoso; 01°15’S, 78°20’W, 3750–3800 m; well-lit dwarfy forest at steep, E-facing slope above unnamed lagoon; Mar 2003, Palice 8487b (holotype PRA).
Additional specimens examined (paratypes):—None.
Hypotrachyna corticola sine rhizinis, cum ciliis furcatis, thallo flavo, soraliis capitatis, acidum salazinicum in medulla continens.