Atrichum cylindricum (willd. ex F.weber) G.l.sm.

Cylindrical atrichum moss (en)

Species

Bryophytes > Polytrichales > Polytrichaceae > Atrichum

Characteristics

Plants dark green. Stems (2.5-)4-5 cm, densely leafy. Leaves 7-8 × 0.8-1 mm wide midway between base and tip, narrowly triangular-lanceolate to linear, subfalcate, plane, not undulate, with a few scattered abaxial teeth, or none, long-tapering to a narrowly acute apex, margin stoutly bordered, doubly toothed from proximal 1/8 of leaf, often colored; costa spinose abaxially towards leaf apex; lamellae (4-)5(-6), low and strictly parallel, (1-)3-4 cells high; median leaf cells 20-25 µm wide, rounded hexagonal, with their longest dimension at right angles to the costa, with distinct trigones, smooth or occasionally with striate papillae near base of leaf. Sexual condition polygamous, most shoots apparently unisexual and female; unisexual male shoots not reported, perigonial leaves similar to the others, but with broader bases, to broadly lanceolate and unbordered in proximal 1/2, the innermost bracts tiny, obovate. Seta reddish brown, 3-4(-5) cm, usually 1 per perichaetium, occasionally 2. Capsule 6-8(-10) × 0.8-1 mm, reddish brown, finely striate, narrowly cylindric, somewhat curved, erect to inclined. Spores 18-20 µm.
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Identifiers

LSID 35100345
WFO ID wfo-0001146767
COL ID 688DT
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Wikipedia (EN)
Wikipedia (FR)

Synonyms

Atrichum cylindricum Polytrichum cylindricum Atrichum undulatum var. attenuatum