Ptychomitrium crassinervium (Müll.Hal.) Schimp. ex Paris

Species

Bryophytes > Grimmiales > Ptychomitriaceae > Ptychomitrium

Characteristics

Plants small to medium-sized, caespitose, dark green to blackish green; terricolous. Stems 5-15 mm tall, little-branched. Leaves incurved and contorted above dry, erect-spreading wet; linear-lanceolate to ovate-lanceolate, (2.0-) 3.5-4.5 mm long; acute; bistratose; base weakly differentiated. Costa percurrent, wide below, smooth dorsally and ventrally; in section narrowly elliptical below, bulging dorsally above, guide cells 8-10, distinct, frequently with auxiliary cells, ventral stereid band 2 or 3 cells thick, ventral surface cells similar to ventral laminal cells, dorsal stereid band 4-6 cells thick, dorsal surface cells small and thickened proximally, similar to dorsal laminal cells distally. Upper laminal cells rounded-quadrate, 11-15 µm, larger juxtacostally, walls thickened, frequently somewhat irregularly so and producing ± wavy walls; ventral row ± larger than dorsal in section; basal cells short-rectangular, yellowish, thin-walled or weakly thickened. Seta (2-)4-5 mm long, yellow-brown. Capsule short-elliptical, 1.5 mm long, brownish. Peristome teeth linear, cleft and perforated, red-yellow, ornately papillose. Operculum rostrate, 1 mm long. Calyptra mitrate, 2 mm long. Spores rounded, 30-34 µm, greenish to brownish, weakly papillose.
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Soil texture 1-8
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Cultivation

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Distribution

Ptychomitrium crassinervium world distribution map, present in South Africa

Identifiers

LSID 35144092
WFO ID wfo-0001171747
COL ID 6WNC3
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Wikipedia (EN)
Wikipedia (FR)

Synonyms

Ptychomitrium crassinervium