Plants 3-8 cm, in dense erect cushions or prostrate mats, green, yellow-green, or fuscous green. Stems yellow; cross section pentagonal, cortical cells in 2-5 irregular layers, medulla cell walls thick to thin, central strand present; rhizoids usually covered by leaves except in older parts of plants. Leaves imbricate, not twisted when dry or moist, oblong to elliptic, widest above base, concave; base not rounded or narrowed to insertion; margins revolute 1-2 times to just before apex, entire; apex rounded-cucullate; costa flexuose toward apex; laminal cells round to oblong, papillae low; basal cells usually 2-stratose, often brown. Specialized asexual reproduction absent. Perigonia as terminal discoid splash platforms; paraphyses of 6-9 cells. Perichaetia with paraphyses absent. Seta 0.2-0.3 cm. Capsule horizontal, 3-5 mm; operculum conic, rostrum short, blunt; endostome cilia nodose. Spores 8-13 µm, smooth. Robust plants in dense, yellow, yellow-green, or yellow-brown tufts 4-11 cm high. Stems and branches stout and julaceous. Leaves erect or imbricate wet or dry, 1.5-3 mm long, concave, oblong or elhptic, rounded and cucullate-concave at the apex, not decurrent; margins entire, narrowly revolute in the lower 2/3 or 3/4; costa straight or flexuose above, ending near the apex; upper cells isodiametric, thickwalled, collenchymatous and ± stellate, 9-15 µm wide, unipapillose on both surfaces; basal cells similar except for several rows of yellow or brown, somewhat swollen, subquadrate or shortly oblong cells with straight, rather thick walls at the insertion. Dioicous. Perigonia rather large, terminal. Setae 15-20 mm long; capsules inclined to nearly horizontal, ± curved, 2.5-3 mm long; operculum bluntly conic; endostome segments gaping, the cilia 3-5. Spores 9-11 µm, smooth or nearly so. (Sporophytes not seen from our area.) In wet, rocky tundra in the north (Mexican habitat unknown); Chihuahua (Chupie Lake area at 2500 m alt.).-Mexico; Greenland to New Hampshire and westward across Canada to Alaska and British Columbia; northern and central Europe; Siberia and Japan. Plants 3-8 cm, in dense erect cushions or prostrate mats, green, yellow-green, or fuscous green. Stems yellow; cross section pentagonal, cortical cells in 2-5 irregular layers, medulla cell walls thick to thin, central strand present; rhizoids usually covered by leaves except in older parts of plants. Leaves imbricate, not twisted when dry or moist, oblong to elliptic, widest above base, concave; base not rounded or narrowed to insertion; margins revolute 1-2 times to just before apex, entire; apex rounded-cucullate; costa flexuose toward apex; laminal cells round to oblong, papillae low; basal cells usually 2-stratose, often brown. Specialized asexual reproduction absent. Perigonia as terminal discoid splash platforms; paraphyses of 6-9 cells. Perichaetia with paraphyses absent. Seta 0.2-0.3 cm. Capsule horizontal, 3-5 mm; operculum conic, rostrum short, blunt; endostome cilia nodose. Spores 8-13 µm, smooth. In wet, rocky tundra in the north (Mexican habitat unknown); Chihuahua (Chupie Lake area at 2500 m alt.).-Mexico; Greenland to New Hampshire and westward across Canada to Alaska and British Columbia; northern and central Europe; Siberia and Japan. Robust plants in dense, yellow, yellow-green, or yellow-brown tufts 4-11 cm high. Stems and branches stout and julaceous. Leaves erect or imbricate wet or dry, 1.5-3 mm long, concave, oblong or elhptic, rounded and cucullate-concave at the apex, not decurrent; margins entire, narrowly revolute in the lower 2/3 or 3/4; costa straight or flexuose above, ending near the apex; upper cells isodiametric, thickwalled, collenchymatous and ± stellate, 9-15 µm wide, unipapillose on both surfaces; basal cells similar except for several rows of yellow or brown, somewhat swollen, subquadrate or shortly oblong cells with straight, rather thick walls at the insertion. Dioicous. Perigonia rather large, terminal. Setae 15-20 mm long; capsules inclined to nearly horizontal, ± curved, 2.5-3 mm long; operculum bluntly conic; endostome segments gaping, the cilia 3-5. Spores 9-11 µm, smooth or nearly so. (Sporophytes not seen from our area.) General Information
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Distribution
Source: [
Flora of North America @ efloras.org
General InformationMemoirs of the New York Botanical Garden
DistributionMoss Flora of China
General Information
