Difference between revisions of "Drummondia"
in T. Drummond, Musc. Amer., 62. 1828.
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Revision as of 23:46, 27 May 2020
Plants medium-sized, in loose mats. Stems creeping, branches erect. Leaves erect-appressed and stiff when dry, spreading to wide-spreading when moist, broadly lanceolate to oblong-lanceolate, not rugose; margins entire; apex obtuse, acute, or cuspidate; costa ending just below apex; basal laminal cells rectangular to quadrate; distal cells ± rounded-quadrate, 6–10 µm, smooth; marginal cells not distinct from basal. Sexual condition autoicous; perichaetial leaves longer than stem leaves. Seta 2–3.5 mm. Capsule long-exserted, ovate to ovate-oblong, wrinkled when old and dry, not constricted below mouth; stomata absent; peristome single; exostome teeth 16, smooth. Calyptra cucullate, long-conic, smooth, naked, not plicate, covering distal 1/3 of capsule. Spores isosporous, multicellular.
Distribution
North America, ne Mexico, South America, Asia.
Discussion
Species 6 (1 in the flora).
Drummondia is characterized by branched, prostrate stems and cucullate calyptrae.
Selected References
None.