Leucobryum martianum Hampe ex C. Müller 1843

Leucobryum martianum (Hornsch.) Hampe; C. Mull
Linnaea 17: 317. 1843.
Dicranum Martianum Hornsch. in Mart. Fl. Bras. I 2 : 11. 1840.
Pseudautoicous : male plants 2-3 mm. high, in clusters on dense tufts of tomentum enclosed by archegonial leaves of sterile flowers; antheridia 2 or 3, about 0.3 mm. long, with few paraphyses, enclosed by several perigonial leaves with an ovate, concave base tapering to a lanceolate point scarcely equaling the base in length: fertile plants in rather low, loose mats, with stout, spreading, short stems or somewhat taller and more compactly growing ; stems mostly 1-3 cm. high, with crowded leaves usually more regularly falcate-secund than in the other species: stem-leaves 5-6 mm. long, very gradually narrowed from an ovate-lanceolate base to a slender subtubulose point denticulate at the apex ; costa in cross-section showing but a single row of cells above and below the chlorocysts throughout the lower part of the leaf with chlorocysts in the upper part of the leaf much nearer the dorsal than ventral surface; hyaline blade narrow, 5 or 6 cells wide below; perichaetial leaves 2.5—3 mm. long, with a broad, convolute base abruptly narrow to a point of about equal length: seta red, flexuous, 1.5-2 cm. long: capsule curved, nodding, strumose, about 1.5 mm. long, deeply furrowed when dry; lid conic-rostrate, about the length of the capsule; peristometeeth reddish-brown, densely vertically striate below, divided about one half down, the forks filiform and papillose above: spores somewhat rough, up to 16 n in diameter.
Type locality: Brazil.
Distribution: Porto Rico, Guadeloupe, Martinique, St. Vincent, and Grenada; also in northern South America. - Angstroemia, 78 Austiuella, 104 Br other a, 133 Campylopodium, 93 Campylopus, 134 Dichodontium, 156 Dicranella, 80 Dicranodontium, 150