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Published In: Die Natürlichen Pflanzenfamilien I(3): 400. 1902. (Nat. Pflanzenfam.) Name publication detailView in Biodiversity Heritage Library

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

This is the first report of Leptodontium stellatifolium outside southeastern Brazil. It is a small plant with a stem sclerodermis, short, broadly acute to obtuse leaves that have a subpercurrent costa, lower leaf cells differentiated only at the extreme base, and a distinctive reddish orange colored costa and basal leaf cells. The presence of minutely crenulate leaf margins and a stem sclerodermis separates this species from all other Central American species of comparable size except forms of L. flexifolium (described as L. orcuttii in Central America and L. filiformis (Lor.) Steere in South America) made up of small, entire-leafed plants. Leptodontium stellatifolium differs from these forms in its more obtuse leaves that have a reddish orange costa and leaf base.

Leptodontium stellatifolium can be confused with Zygodon. It differs from Zygodon in having complex, often c-shaped, leaf papillae, and in having the dorsal surface of the costa covered nearly to the leaf insertion by 3–8 simple papillae per cell.

Illustrations: Zander (1972, Figs. 36–42). Figure 47.
Habitat: Terrestrial; 3333 m.
Distribution in Central America: COSTA RICA. San José: Crosby 3900B (MO).
World Range: Central America; Brazil.


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Leptodontium stellatifolium (Hampe) Broth., Nat. Pflanzenfam. 1(3): 400. 1902.

Anacalypta stellatifolia Hampe, Vidensk. Meddel. Dansk Naturhist. Foren. Kjøbenhavn 34: 37. 1872. Pottia stellatifolia (Hampe) Jaeg., Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1871–1872: 345. 1873. Protologue: Brazil. Rio de Janeiro, Glaziou s.n., sub num. 5205.

Plants small, in loose tufts, glaucous-green or yellow-green, to 0.8 cm high. Stems red, erect, sclerodermis present, sparsely radiculose. Leaves erect-incurved to erect-flexuose when dry, erect-spreading when wet, lingulate, 1–1.5 mm long, weakly keeled above, weakly sheathing at base, not decurrent; apices broadly acute to obtuse; margins reflexed in lower 1/2, bulging outward at basal margins, minutely crenulate by papillae above; costa orange-red, subpercurrent, ending 3–5 cells below apex, dorsally papillose nearly the entire length; upper leaf cells rounded, quadrate, subrectangular, triangular, or oblate, thick-walled, pluripapillose, papillae simple, c-shaped, bifid or trifid, 2–7 per cell, 4–16 x 4–14 μm, basal cells orange-red, rectangular, to elongate, pluripapillose or smooth, firm-walled, 14–30 x 6–7.5 μm, basal marginal cells quadrate. Gemmae not seen, reported (Zander 1972) to be large, obovoid, multicellular, borne on the stems. Dioicous. Setae straight, 9 mm long, yellow. Capsules erect, cylindrical, 1–1.5 mm long, smooth; exothecial cells short-rectangular; opercula conic-rostrate, 1 mm long; annuli vesiculose; peristome teeth linear, divided to near the base, yellow-brown.  Spores 16–20 μm, lightly papillose. Calyptrae cucullate, yellow, smooth, 2 mm long.



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