Pogonatum brachyphyllum (Michx.) P.Beauv.

Pogonatum moss (en)

Species

Bryophytes > Polytrichales > Polytrichaceae > Pogonatum

Characteristics

Plants small, scattered on a deep-green, persistent protonema, dull green to red-brown with age. Stems 0.2-0.3 cm. Leaves 1.5-3 mm, incurved at the tips when dry, erect-spreading when moist, gradually tapering to the blade; sheath oblong, entire, not hyaline-margined, the zone of incrassate hinge-cells at the shoulders not sharply defined; blade lanceolate, broadly and bluntly pointed, appearing turgid and fleshy, entire; marginal lamina erect, narrow, 1-stratose; costa ending in the tip, smooth abaxially; lamellae 25-40, entire in profile, 7-12 cells high, the marginal cells in section rounded, often thicker-walled, smooth; sheath cells short-rectangular; cells on the abaxial surface of blade 14-17 µm wide, thick-walled, longitudinally elongate in the median portion, subquadrate to either side. Seta (0.5-)1.5-2.5 cm, reddish, often twisted below the capsule. Capsule 2-2.5 mm, ± asymmetric, suberect to inclined to almost horizontal; operculum with a convex base and a short, rather blunt beak; exothecium mammillose, the cells short-rectangular, thick-walled; peristome to 300 µm, deeply divided almost to the capsule rim, the teeth reddish with hyaline margins. Spores 13-18 µm.
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Identifiers

LSID 35119611
WFO ID wfo-0001157567
COL ID 4KV94
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Wikipedia (EN)
Wikipedia (FR)

Synonyms

Pogonatum brachyphyllum Pogonatum pusillum Polytrichum brachyphyllum Polytrichum vaginans