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Published In: The Bryologist 75: 239. f. 62–67. 1972. (Bryologist) Name publication detail

Project Name Data (Last Modified On 2/16/2011)
Acceptance : Accepted
Project data     (Last Modified On 2/16/2011)

Leptodontium stoloniferum and L. capituligerum are the only Central American species of Leptodontium with sharply demarcated inner and outer basal leaf cells. They are somewhat similar in overall aspect, and the specialized enations found on the leaf bases of L. capituligerum may be directly related to the enations found on the stems and gemmiferous branches of L. stoloniferum. Leptodontium capituligerum differs from L. stoloniferum in only rarely having obovoid gemmae and these are borne on the main stems. In addition its leaves are ovate-lanceolate to lanceolate, keeled above, have acute apices, costae ending 2–5 cells below the apex, quadrate to short-rectangular outer basal leaf cells, and coronate papillae on the upper leaf cells. In contrast L. stoloniferum has obovate to elliptic leaves that are concave above, have broadly acute apices, costae ending 8–10 cells below the apex, long-rectangular outer basal leaf cells, and simple or c-shaped papillae on the upper leaf cells.

Illustrations: Zander (1972, Figs. 62–67); Crum and Richards (1984, Fig. 1); Zander (1993, Pl. 37 7–9). Figure 48.
Habitat: On branches and logs under dense shrub in páramo; 3320 m.
Distribution in Central America: COSTA RICA. San José: Richards 6143 (MICH).
World Range: Central America; Northern South America.


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Leptodontium stoloniferum Zand., Bryologist 75: 239. 1972.

Protologue: Colombia. Cundinamarca, Páramo Choachí, Lindig 2127 (M, holotype separated from isotype of L. filescens).

Leptodontium ramosum Crum & Richs., J. Bryol. 13: 193–200. 1984. Protologue: Costa Rica. Cerro de la Muerte, Sierra de Talamanca (Prov. S. José), [Richards] 6143 (MICH).         

Plants small to medium-sized, in dense tufts, yellowish brown, 1.5–3 cm high. Stems red-brown, erect or laxly ascending, often covered above with unistratose enations, small hyalodermis present, sparsely radiculose below. Leaves widely spaced, erect-spreading, contorted to crispate when dry, spreading to patulous when wet, oblong-ovate to elliptic, 2.5–3 mm long, concave, erect-sheathing at base, decurrent; apices broadly acute; margins recurved in lower 1/2, coarsely serrate in upper 1/3; costa ending well below the apex; upper leaf cells quadrate to hexagonal, firm- to thick-walled with rounded corners, pluripapillose, papillae small, simple or c-shaped, 8–11 μm in diameter, outer basal cells narrowly long-rectangular, thick-walled, often porose, 32.5–75 x 5–10 μm, inner basal cells elongate, oblong to oblong-hexagonal, thin-walled, bulging, hyaline, 35–75 x 12.5–22.5 μm, sharply demarcated from upper cells and outer basal cells, alar cells not differentiated. Asexual reproduction by fusiform gemmae (with transverse and vertical walls) borne at the apex of stout, leafless branches, on upper part of main stem, gemmiferous branches densely covered with enations identical to those often found on the stems. Inflorescences and sporophytes unknown.



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