dcsimg

Macromitrium dussii

Comprehensive Description

provided by North American Flora
Macromitrium dussii Broth. Symb. Ant. 3 : 424. 1903
Plants densely cespitose; secondary stems about 1 cm. long, sparingly branched, densely foliate; leaves loosely appressed and contorted to somewhat crisped when dry erect-open when moist 3-4 mm long, narrowly lanceolate, mostly abruptly apiculate, rarely slenderly acummate strongly pHcate, smooth throughout, the margins plane or slightly revolute on one side of TJ u— J£to ontire but occasionally slightly crenulate at the apex; costa percurrent to shortly excurrent into the apiculus; leaf -cells incrassate, narrowly long-linear below, becoming shorter toward the apex where they are 13-25 X 5-6 fx, and shorter on the margins; perichaetial leaves little different, or more slenderly acuminate and the upper cells longer and narrower; pseudautoicous, the male plants minute, rooted among the upper leaves; seta smooth, 1-1.5 cm. long; capsules ovoid to oblong-cylindric, widest in the middle, the urn about 2 mm. long; calyptra smooth; operculum rostrate; peristome simple, the teeth short, truncate, whitish, strongly papillose; spores 25-30 /* in diameter, papillose.
Type locality : On soil, Mt. Pelee, Martinique (Duss 351 in herb. Berol.)Distribution: Martinique; Jamaica (/. K. Brown 11171) ; Cuba {Shaffer 3736).
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bibliographic citation
North American flora. vol 15A (1). New York Botanical Garden, New York, NY
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North American Flora