Grimmia subg. Guembelia |
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Habit | Plants 10–20 mm (–70 mm for G. atrata). |
Stem | central strand present or absent. |
Gemmae | absent. |
Leaves | narrowly ovate-lanceolate to oblong-lanceolate, keeled, margins plane, recurved or incurved, costa prominent; basal marginal cells hyaline or not; distal lamina 2-stratose or with at least several marginal rows 2-stratose. |
Seta | straight, centrally attached to capsule. |
Sexual condition | autoicous or dioicous. |
Capsule | immersed to exserted, smooth (except G. mariniana); stomata present or absent, small, at neck to part way up capsule. |
Calyptra | mitrate to cucullate, covering operculum. |
Grimmia subg. Guembelia |
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Distribution | North America; Mexico; Central America; South America; Eurasia; Africa; Pacific Islands; Australia; Antarctic |
Discussion | Species 41 (13 in the flora). Members of subg. Guembelia are recognized by their thick, keeled leaves and usually long, straight setae with smooth capsules. Most occur on dry acidic rock, with three species growing on damp to wet acidic rock and one on dry calcareous rock. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 27, p. 233. |
Parent taxa | |
Subordinate taxa | |
Synonyms | subg. Guembelia |
Name authority | (Hampe) Schimper: Coroll. Bryol. Eur., 48. (1856) |
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