Plagiothecium piliferum (Sw.) Schimp.

Hair silk-moss (en)

Species

Bryophytes > Hypnales > Plagiotheciaceae > Plagiothecium

Characteristics

Plants in dense mats, light green to yellowish, glossy. Stems to 6 cm, 1-1.5 mm wide across leafy stem, prostrate, complanate-foliate to subjulaceous. Leaves erect, appressed, imbricate, oblong-ovate, symmetric, concave, 0.8-2 × 0.4-0.8 mm; margins narrowly recurved nearly to apex, entire or minutely serrulate at apex; apex abruptly contracted to long-filiform acumen, flexuose; costa ending just beyond leaf base, sometimes ecostate; alar cells rectangular, 16-75 × 7-20 µm, in 2-4 vertical rows, terminating in 1 cell at base, region triangular; medial laminal cells 36-96 × 3-5 µm. Specialized asexual reproduction unknown. Sexual condition autoicous, usually fruiting. Seta yellow to red, 0.8-1.5 cm, straight. Capsule erect or sometimes slightly inclined, light brown to yellowish or reddish when mature, straight, 1-4 × 0.5-1 mm, smooth or slightly wrinkled when dry, strongly wrinkled at neck; operculum conic, 0.4-0.7 mm; endostome cilia usually absent, or 1 or 2, rudimentary. Spores 9-13 µm.
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Foliage retention deciduous
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Identifiers

LSID 35124579
WFO ID wfo-0001160053
COL ID 4JHJT
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INPN ID 5971
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Hypnum orthocarpon Plagiothecium piliferum Isopterygium piliferum Plagiotheciella pilifera Plagiothecium piliferum var. brevipilum