Hennediella longirostris (Hampe ex Müll. Hal.) R.H. Zander
Plants small forming dense turfs, yellowish green to dark-green or brownish. Stems 0.2-1 cm high, usually branched. Leaves incurved to individually twisted when dry, erect-patent to patent when wet, ovate-lanceolate, oblong-lanceolate or lanceolate, (1.3)2.9-3.3(4.2) mm long, (0.4)0.6-0.8 mm wide, apex acute; margins narrowly recurved in the lower third or from the base to the middle, dentate by (1)2-9(19) teeth per margin, regular to irregularly bistratose at midleaf; costa excurrent in a mucro, rarely percurrent, in cross-section circular, more rarely semicircular or elliptic, with 2-4 guide cells in 1(2) layers, and (2)3-5(6) rows of dorsal stereids; upper and median cells quadrate to quadrate-hexagonal or short-rectangular, (10)12,5-20(22,5) µm long, 10-15(17.5) μm wide, papillose, marginal cells forming a border, 2-5(7) rows of linear to long-rectangular cells at midleaf, (30)66-93(120) µm long, (2.5)5-7.5 μm wide [ratio length/width (5)10-20(35)]. Autoicous. Setae (4)5.3-9 mm long. Capsules exserted; urn cylindrical, (1.2)1.8-3.1(4.2) mm long; opercula rostelate, 1.3-1.8 mm long, not systylius, in straight rows; peristome absent. Spores (20)25-28(35) μm in diameter.
Ecology. Humid, semi-humid and dry puna; on soil, usually in boggy places (bofedales). Elevation. 3200-5000 m. Distribution. Bolivia: Cochabamba, La Paz, Oruro. World range: Mexico, tropical Andes (Bolivia, Ecuador and Peru), and tropical Africa (Ethiopia, Tanzania, and Uganda).
The recurved and bistratose leaf margins of this species are unique among the Andean taxa of Hennediella. Barbula weddelii Schimp. ex Müll. Hal. and Tortula leiostoma Herzog are synonyms; the former is based on a collection made by Weddell in 1851 from Chuquiaguillo (Department of La Paz), the latter based on a collection by Herzog made in 1911 from Llavetal. A further synonym is Hennediella limbata (Mitt.) R.H. Zander.
Specimens. Cochabamba: Herzog 3619a (JE); La Paz: Lewis 87-606 (LPB, MO, PC).