Holomitrium maxoni

Holomitrium maxoni R. S. Williams, Bull. Torrey
Club 34 : 572. 1908.
Pseudautoicous: male plants minute, attached by radicles to the older perichaetial buds, the outer antheridial leaves ovate-lanceolate, very acute, entire, 0.5-0.65 mm. long, faintly costate to ecostate, the inner much shorter, concave, brownish, enclosing apparently only 1 or 2 well developed antheridia 0.2 mm. long and 2 or 3 paraphyses: fertile plants in rather darkgreen tufts, with stems bearing few radicles up to 8 mm. high: leaves when dry incurvedimbricate with margins above rolled in, when moist spreading-recurved, oblong to linear, up to 2.5 mm. long and 0.4 mm, wide, at the apex mostly broadly rounded or somewhat truncate, with excurrent costa forming a stout apiculus, and a few coarse teeth on either side; costa a little above the base about 40 y, wide, in cross-section near the middle mostly showing about 2 guide-cells with 2 rather large cells on the upper side and no stereid-band, on the under side a stereid-band of somewhat variable size with the outer cells usually well differentiated; upper leaf-cells more or less hexagonal to oblong, about 12 m wide by 20-30 /x long, gradually becoming more rectangular in the middle of the leaf and toward the base longer and narrower next the costa, toward the margin paler and rectangular to square, the alar either forming a distinct brownish cluster or scarcely different from the cells just above: seta up to 18 mm. long: capsule oblongcylindric, erect, 3 mm. long, red at the slightly contracted mouth; peristome-teeth attached about one fourth their length below the mouth, red below, distinctly articulate, papillose on both sides and more or less divided along the median line either above or below or sometimes throughout; lid and calyptra not seen: spores nearly smooth, up to 12 ix in diameter.
Type locality: Posesion de Starck, Xateras, Oriente, Cuba, 500 meters. Distribution: Known only from the type locality.