الوصف: |
Pitcairnia pugana Gonz. –Rocha et P. Carrillo, sp. nov. (Figs. 1, 6) Type:— MEXICO, Jalisco: municipality of Mazamitla, cascada Los Cazos, 3.5 km aprox. al SW de Mazamitla, sierra del Tigre, 19º53’35.9’’N, 103º02’29.8’’W, bosque de Quercus alterado, 2100 m, 14 June 2017, E. González-Rocha & P. Carrillo-Reyes 403 (holotype UAMIZ!, isotypes IBUG!, MEXU!). Diagnosis: — Pitcairnia pugana is similar to P. jaliscana but differs in the inflorescence direction (curved vs. erect), in the size and indument of the peduncle (16–25 cm long, densely white-lepidote vs. 12–40 cm long, sparsely white-lepidote to glabrescent) and in the size of the peduncle bracts (12–29 cm long, barely surpassing the peduncle vs. 12–57 cm long, much longer than the peduncle). Description: — Plant saxicolous, cespitose, 23–54 cm high in flower. Roots fibrous. Stem bulbous, 3–5.5 cm long, 2–4 cm diameter. Leaves not petiolate; sheath brown abaxially, light brown adaxially, widely ovate to ovate, 2–4.3 cm long, 1.3–3 cm wide, entire; leaf blades of three different kinds: the first and main ones foliaceous, green, linear, 21–40 cm long, 6‒10 mm wide, entire except on the persiting base, conspicuously nerved, glabrous adaxially, densely white-lepidote abaxially, not present during flowering season, deciduous by a transverse line of abscission well above the sheath and the persistent portion denselly white-lepidote adaxially, sparselly white-lepidote abaxially and with antrorse spiny-teeth ca. 1 mm long on the margins; the second ones reduced and sheath like, papiraceous, 5–6 cm long, 1–1.5 cm wide, lanceolate to narrowly oblong, entire, acuminate, conspicuously nerved, sparsely lepidote adaxially, white lepidote abaxially; the third ones non-photosynthetic, with a stiff persistent brown linear blade, 1.5–4.5 cm long, ca. 1 mm wide, glabrous adaxially, densely white-lepidote abaxially, with retrorse spiny-teeth ca. 1 mm long on the margins. Inflorescence racemose, curved; peduncle red, 16–25 cm long, 1.5–4 mm diameter, densely white-lepidote, ... |