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FNA | Family List | FNA Vol. 28 | Orthotrichaceae

2. Drummondia Hooker in T. Drummond, Musc. Amer. 62. 1828. • [For Thomas Drummond, 1780-1835, Scottish botanist who collected extensively on two expeditions to North America].
[name conserved]

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, .

Species 6 (1 in the flora): North America, ne Mexico, South America, Asia.

Drummondia is characterized by branched, prostrate stems and cucullate calyptrae.

Lower Taxon


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