Racomitrium Brid.

Racomitrium moss (en)

Genus

Bryophytes > Grimmiales > Grimmiaceae

Characteristics

Plants medium-sized to large, coarse and rigid, usually hoary, grayish, brownish or yellowish green, yellow or yellow-to blackish brown. Stems mostly pinnately branched, with many short, lateral branchlets. Leaves erect to slightly secund when dry, loosely erect to erect-spreading or spreading-recurved when wet, narrowly ovate-to linear-lanceolate; margins 1-stratose, recurved to revolute, entire proximally, coarsely dentate along the hyaline border; apices gradually tapering to a long, slender, hyaline acumen; awns densely papillose, erose-dentate, long-decurrent, with the decurrencies flat or ruffled; costa percurrent, in transverse section 2-stratose, becoming 3-stratose in the proximal portion; laminal cells 1-stratose, sinuose, dull and opaque, distinctly papillose with large, flat papillae covering the longitudinal walls and almost the whole of the lumina except for a narrow central groove; basal marginal laminal cells long-rectangular, forming 1(-2)-seriate band, consisting of to 30 rectangular, translucent, not sinuose cells; alar cells not differentiated; medial cells long-rectangular; distal cells short-rectangular. Inner perichaetial leaves hyaline, oblong, oblong-lanceolate to elliptical, abruptly constricted into a short, smooth or weakly papillose awn. Seta single or often 2-3 per perichaetium, sinistrorse when dry, strongly papillose. Capsule straight, ovoid to ovoid-cylindric, somewhat ventricose in the base; annulus revoluble, 2-4-seriate; operculum long-rostrate; peristome teeth, long, reddish brown, split nearly to the base into 2 filiform, strongly papillose branches. Calyptra conic-mitrate to cucullate, naked. Spores spherical, pale yellow, finely roughened.
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Foliage retention deciduous
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Cultivation

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Images

Racomitrium unspecified picture

Identifiers

LSID 35001094
WFO ID wfo-4000032440
COL ID 92LNB
BDTFX ID -
INPN ID 197013
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Racomitrium

Lower taxons

Racomitrium bartramii Racomitrium alare Racomitrium amoenum Racomitrium andreaeoides Racomitrium angustifolium Racomitrium aquaticum Racomitrium aterrimum Racomitrium brevisetum Racomitrium carinatum Racomitrium chrysoblastum Racomitrium crispipilum Racomitrium crispulum Racomitrium didymum Racomitrium durum Racomitrium ellipticum Racomitrium emersum Racomitrium lepervanchei Racomitrium nitidulum Racomitrium obtusifolium Racomitrium obtusum Racomitrium seychellarum Racomitrium striatipilum Racomitrium strictifolium Racomitrium subcrispipilum Racomitrium sublamprocarpum Racomitrium subnigritum Racomitrium subrupestre Racomitrium subsecundum Racomitrium decurrens Racomitrium verrucosum Racomitrium vulcanicola Racomitrium joseph-hookeri Racomitrium visnadiae Racomitrium valdon-smithii Racomitrium austrogeorgicum Racomitrium barbuloides Racomitrium brachypus Racomitrium cucullatifolium Racomitrium cucullatulum Racomitrium dichelymoides Racomitrium fastigiatum Racomitrium flettii Racomitrium genuflexum Racomitrium grimmioides Racomitrium hausmannianum Racomitrium himalayanum Racomitrium hyalinocuspidatum Racomitrium incurvum Racomitrium japonicum Racomitrium laetum Racomitrium laevigatum Racomitrium lamprocarpum Racomitrium lanuginosum Racomitrium macounii Racomitrium marginatum Racomitrium membranaceum Racomitrium nigritum Racomitrium nigroviride Racomitrium nipponicum Racomitrium orientale Racomitrium orthotrichaceum Racomitrium pachydictyon Racomitrium panschii Racomitrium papeetense Racomitrium phyllanthum Racomitrium polyphyllum Racomitrium protensum Racomitrium pruinosum Racomitrium pseudoaciculare Racomitrium pseudopatens Racomitrium ptychophyllum Racomitrium rigidissimum Racomitrium rupestre Racomitrium subulifolium Racomitrium sulcipilum Racomitrium sullivanii Racomitrium symphyodontum Racomitrium tortipilum Racomitrium vulcanicum Racomitrium willii Racomitrium zygodonticaule Racomitrium gracillimum Racomitrium albipiliferum Racomitrium crumianum Racomitrium muticum Racomitrium lusitanicum Racomitrium ochraceum Racomitrium minutum Racomitrium kerguelense Racomitrium curiosissimum Racomitrium patagonicum Racomitrium hespericum Racomitrium funale Racomitrium fuscescens Racomitrium helvolum Racomitrium heterostichoides Racomitrium steerei