Pohlia nutans (Hedw.) Lindb.

Pohlia moss (en)

Species

Bryophytes > Bryales > Mniaceae > Pohlia

Characteristics

Plants small to medium-sized, loosely caespitose, green to yellow-green; terricolous. Stems 10-30 mm high, reddish, mostly simple, sparsely tomentose below. Leaves larger above, forming comose tuft, erect to erect-spreading wet or dry, below ovate-lanceolate 1.3-2.5 mm long, above linear-lanceolate, 2-3 mm long; apex acuminate; margins plane to narrowly recurved, entire to denticulate at apex. Costa percurrent to subpercurrent; in section bulging dorsally, guide cells 2, incrassate, occasionally with 1-2 ventral stereids, ventral surface cells similar to guide cells, dorsal stereid band weak, only a few cells and hydroids below guide cells, dorsal surface cells similar to ventral cells, incrassate. Upper laminal cells mostly 5-8: 1, linear to elongate-hexagonal, 50-75(-100) x 10-12 µm, frequently incrassate; basal cells rectangular. Paroicous. Antheridia in axils of comal leaves; perichaetia terminal, leaves similar to comal leaves. Seta flexuose, 10-30 mm long, brownish; capsule subhorizontal to pendent, pyriform, 2 mm long, neck short; exothecial cells irregularly rectangular, thin-walled; 1-2 rows at mouth darker, transversely rectangular; stomata present on neck, phaneropore; annulus differentiated; peristome double, yellowish, exostome teeth narrowly triangular, finely papillose, endostome with high basal membrane, segments broad, as high as teeth, cilia well developed, 2-3, elongate; operculum convex-apiculate; spores rounded, 18-25 µm, weakly papillose, brownish.
More
Plants small to large, green or rarely reddish, dull. Stems 0.5-3.5(-10) cm. Leaves erect to ± spreading, lanceolate to ovate-lanceolate, 2 mm; ; margins subentire or more often serrulate to serrate in distal 1/3; costa subpercurrent, percurrent, or rarely short-excurrent; distal medial laminal cells hexagonal to rhomboidal, , 50-90 µm, walls moderately thick. Specialized asexual reproduction typically absent. Sexual condition paroicous, rarely dioicous; perigonial leaves ovate-lanceolate; perichaetial leaves somewhat differentiated, ± long-lanceolate. Seta orange to orange-brown. Capsule inclined 80-100°, orange to orange-brown, slender-pyriform, neck 1/2 urn length; exothecial cells elongate-rectangular, walls straight; stomata superficial; annulus present; operculum conic; exostome teeth yellow to orange-brown, acute-triangular; endostome hyaline or rarely orange-brown, basal membrane 1/2 exostome length, segments , broadly keeled, broadly perforate, cilia short to long. Spores 16-22 µm, finely to distinctly roughened.
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Foliage retention deciduous
Sexuality monoecy
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Mature height (meter) 0.01 - 0.03
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Hardiness (USDA) 8-11

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Images

Pohlia nutans unspecified picture

Distribution

Pohlia nutans world distribution map, present in Brazil, United States of America, and South Africa

Identifiers

LSID 35124885
WFO ID wfo-0001160242
COL ID 4KWK9
BDTFX ID -
INPN ID 4901
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Bryum austronutans Bryum basalticum Bryum beccarii Pohlia longifolia Pohlia nutans Pohlia polygama Pohlia tomentoso-caespitosa Webera bicolor Webera canaliculata Webera duriuscula Webera ecklonii Webera nutans Webera pendula Webera racovitzae Webera strangulata Webera subdenticulata Bryum ecklonianum Bryum humidulum Bryum leptopelmatum Bryum montanum Bryum nigricans Bryum pertenellum Bryum schimperi Bryum sphagnadelphus Bryum subdenticulatum Bryum torlessense Bryum afronutans Bryum cucullatiforme Pohlia schimperi Webera longifolia Webera montana Bryum interruptum Bryum laxum Pseudopohlia merrillii Bryum umbrosum Pohlia nutans var. bicolor Pohlia nutans var. strangulata Pohlia nutans var. subdenticulata Bryum nutans subsp. macounii Bryum caespitosum var. strangulatum

Lower taxons

Pohlia nutans var. longiseta Pohlia nutans subsp. otaruensis