Didymodon xanthocarpus (Müll.Hal.) Magill

Species

Bryophytes > Pottiales > Pottiaceae > Didymodon

Characteristics

Plants medium-sized, forming cushions, yellowish green to reddish or dark green above, reddish below, frequently glossy; terricolous. Stems 10-20 mm tall, frequently branched above; in section round, central strand present, generally large, inner cortical cells large, incrassate, reddish or yellowish, outer cortical cells in 2-3 rows, stereids, red. Leaves contorted or rarely twisted around stem dry, widespreading wet; lanceolate to oval-acuminate, 2.0-3.5 mm long, keeled, rarely bistratose above; apex acute, mucronate; margins entire, revolute throughout. Costa strong, short-excurrent, ventral superficial cells rounded-quadrate, incrassate, smooth, dorsal superficial cells rectangular, incrassate, smooth; in section round, semicircular or oval, guide cells 4-6, ventral cells in 2-3 layers, similar to guide cells or frequently incrassate, ventral surface cells incrassate, mammillose or papillose, dorsal stereid band strong, 4-5 cells thick, reddish, dorsal surface cells larger, outer walls more strongly thickened. Upper laminal cells small, rounded-quadrate, incrassate, bulging or some cells mammillose; basal cells elongate, thin-walled, smooth. Dioicous. Perichaetia terminal, leaves oblong, 2.0-2.5 mm long; apex irregularly notched; laminal cells irregularly shaped, triangular to rectangular, incrassate, smooth. Seta erect, 8-20 mm long, reddish yellow to dark red; capsule cylindrical to oblong-elliptical, 1.5-2.5 mm long, constricted at mouth; peristome weakly twisted, teeth linear, 0.8 mm long, finely papillose, yellowish red; operculum rostrate, 1.5 mm long; calyptra cucullate; spores round, 12.5-15.0 µm, granulate to smooth.
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Foliage retention deciduous
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Mature height (meter) 0.01 - 0.02
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Cultivation

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Distribution

Didymodon xanthocarpus world distribution map, present in South Africa

Identifiers

LSID 35140562
WFO ID wfo-0001169400
COL ID 35YX4
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Wikipedia (EN)
Wikipedia (FR)

Synonyms

Barbula xanthocarpa Didymodon knysnae Didymodon xanthocarpus