Rhacocarpus purpurascens (Brid.) Paris

Species

Bryophytes > Hedwigiales > Rhacocarpaceae > Rhacocarpus

Characteristics

Plants medium to large, forming large, loose tufts, yellow-green to grey-green, frequently tinged with red, yellow at apex, brown to black below; saxicolous or terricolous. Stems creeping, to 100 mm long, branches numerous; in section round, central strand absent, inner cortical cells large, hyaline, in 3-5 rows; outer cortical cells smaller, red-yellow, thick-walled, in 2 or 3 rows, axillary hairs few, 2 or 3 cells long, basal cells brown; pseudoparaphyllia absent. Leaves evenly spaced, widespreading wet, appressed with reflexed tips dry; stem leaves ovate to oblong, 1.5-2.0 mm long; acute to acuminate; apex frequently hair-pointed, awn reddish, weakly narrowed to insertion; margins recurved and reddish below, plane to broadly inflexed above, serrulate above, faintly bordered; ecostate. Upper laminal cells fusiform, somewhat sigmoid, heterogeneous, 12-75 µm long, 6-12 µm wide, walls incrassate and pitted, densely granulate on both surfaces, border cells in 2-16 rows, narrower and smooth, thicker in section; basal cells somewhat longer but not strongly differentiated, 60-100 µm long, 8-12 µm wide, greenish yellow, reddish across insertion, walls incrassate and pitted, densely granulate; alar cells strongly differentiated and forming distinct groups, quadrate to short rectangular, reddish, smooth, thin-walled. Perigonial leaves ovate-acute, 1 mm long. Perichaetial leaves oblong-acuminate, imbricate, 2.5-3.0 mm long, margins weakly serrulate; leaf cells rectangular, incrassate and pitted. Seta 6 mm long, yellow-brown, smooth. Capsule exserted, erect, ellipsoid, 2 mm long, weakly ribbed, yellow-brown, gymnostomous; neck shorter than urn; exothecial cells rounded to quadrate, walls thin, cells at mouth quadrate to transversely short-rectangular, neck cells smaller, quadrate, thickened; stomata on neck, numerous, phaneropore. Operculum conic-rostrate, beak curved, 0.5 mm long. Calyptra cucullate, reddish, 1 mm long, smooth. Spores not seen.
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Environment

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Soil humidity 7-9
Soil texture 7-8
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Hardiness (USDA) 8-12

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Cultivation

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Distribution

Rhacocarpus purpurascens world distribution map, present in Brazil and South Africa

Identifiers

LSID 35145145
WFO ID wfo-0001172454
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INPN ID 726944
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Anictangium humboldtii Rhacocarpus ecklonianus Harrisonia flavipila Harrisonia gracillima Harrisonia rubro-cincta Harrisonia uleana Hedwigia orbiculata Harrisonia appendiculatum Harrisonia breuteliana Harrisonia crasso-limbata Harrisonia eckloniana Harrisonia mandonii Harrisonia pallidipila Harrisonia purpurascens Harrisonia rehmanniana Harrisonia rivularis Harrisonia rubiginosa Rhacocarpus purpurascens Anoectangium humboldtii var. australe Rhacocarpus humboldtii var. argentinicus Rhacocarpus humboldtii var. rufipilus Harrisonia humboldtii var. argentinica Harrisonia humboldtii var. rufipila