Grimmia pulvinata (Hedw.) Sm.

Pulvinate dry rock moss (en)

Species

Bryophytes > Grimmiales > Grimmiaceae > Grimmia

Characteristics

Plants small, forming dense cushions, blackish to yellow-green; saxicolous or terricolous. Stems erect, 5-15 mm high, branched below; in section central strand small, inner cortical cells in 3-5 rows, large, yellowish, outer cortical cells in 1-2 rows, substereids, yellowish. Leaves appressed, weakly spiralled dry, erect-spreading wet; lanceolate to ovate-acuminate, 3.0-3.5 mm long; apex acute to obtuse; margins plane, entire, bistratose to multistratose above base. Costa excurrent as a generally smooth, hyaline awn, to 1 mm long, rarely percurrent; in section guide cells 2, large, ventral cells absent, dorsal stereid band 3-4 cells thick, dorsal surface cells large, incrassate. Upper laminal cells short-rectangular, sinuate; basal cells long-rectangular to linear, walls smooth or rarely sinuolate. Autoicous. Perichaetia terminal; leaves undifferentiated. Seta frequently curved, 2-3 mm long, yellowish; capsule exserted, inclined to pendulous, urn ovoid, 1 mm long, 8-ribbed dry; peristome teeth triangular, 2-3-cleft above, perforated below, weakly papillose, red-yellow; operculum short-rostrate; spores round, 12-13 µm, smooth.
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Plants in hemispherical hoary cushions, grayish green. Stems 1-3 cm, central strand present. Leaves flexuose when dry, erect when moist, lanceolate, 1-1.7 × 0.3-0.6 mm, keeled, margin recurved on both sides nearly from base to apex, rarely only one margin recurved, abruptly contracted into short to long, smooth to denticulate awn, costa weak proximally, projecting on abaxial side; basal juxtacostal laminal cells quadrate to short-rectangular, thin-walled; basal marginal laminal cells quadrate to short-rectangular, thin-or thick-walled; medial laminal cells rounded-quadrate, slightly sinuose, thin-walled; distal laminal cells 1-stratose, margins 2-stratose. Gemmae absent. Sexual condition autoicous. Seta arcuate, 3-4 mm. Capsule usually present, exserted, ellipsoid to obloid, brownish and ribbed when empty and dry, exothecial cells thin-walled, annulus present, operculum rostrate, peristome teeth reddish, fully-developed, papillose. Calyptra mitrate.
Plants small, forming dense cushions, blackish to yellow-green. Stems 5-15 mm long. Leaves appressed, weakly spiralled when dry, unistratose; lanceolate to ovate-lanceolate; apex acute to obtuse; margins bistratose to multistratose above; costa excurrent as smooth, hyaline awn. Upper laminal cells short-rectangular, sinuate. Capsule exserted, inclined to pendulous, ovoid, seta frequently curved; peristome teeth triangular; operculum short-rostrate.
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Foliage retention deciduous
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Mature height (meter) 0.01 - 0.02
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Soil humidity 1-6
Soil texture 7-8
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Cultivation

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Images

Grimmia pulvinata unspecified picture

Distribution

Grimmia pulvinata world distribution map, present in South Africa

Identifiers

LSID 35147246
WFO ID wfo-0001173777
COL ID 6L52J
BDTFX ID -
INPN ID 5554
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Grimmia auresia Grimmia austropulvinata Grimmia callosa Grimmia decurrentipilis Grimmia drakenbergensis Grimmia ecklonii Grimmia montevidensis Grimmia pulvinata Grimmia subcurvula Grimmia woollsiana Fissidens pulvinatus Grimmia indianensis Grimmia africana Grimmia campbelliae Grimmia cygnicolla Grimmia gibertii Grimmia hendersonii Grimmia leptotricha Grimmia phyllorhizans Grimmia orbicularis var. patagonica Grimmia pulvinata var. africana Grimmia trichophylla var. indianensis Fissidens pulvinatus var. africanus Grimmia pulvinata var. pulvinata Grimmia decipiens var. hendersonii

Lower taxons

Grimmia pulvinata var. bescherellei Grimmia pulvinata var. brevipila Grimmia pulvinata var. longepilosa Grimmia pulvinata var. robusta