Brachythecium laetum (Brid.) Schimp.

Species

Bryophytes > Hookeriales > Brachytheciaceae > Brachythecium

Characteristics

Plants medium-sized, in moderately loose to dense mats, light green, sordid green, or yellowish to brownish. Stems to 7(-12) cm, creeping, terete-foliate, irregularly pinnate, branches to 12(-25) mm, straight to slightly curved, terete-foliate. Stem leaves erect, loosely to densely imbricate, narrowly ovate-triangular, broadest at 1/12-1/8 leaf length, partially concave, deeply plicate, (1-)1.3-2.2 × (0.4-)0.6-1 mm; base rounded, decurrent; margins plane or recurved at places, serrulate almost to base; apex gradually acuminate; costa to 55-75% leaf length, moderately weak, terminal spine absent; alar cells subquadrate, same size as or smaller than basal cells, (8-)10-13 × 10-15 µm, walls thin, region not clearly differentiated, to 8-15 cells along margins; laminal cells elongate, 25-70 × 5-8 µm; basal cells , 15-25 × (6-)8-11 µm, region in 3 rows near costa, . Branch leaves less plicate; costal terminal spine sometimes present. Sexual condition dioicous. Seta brownish orange, 0.7-2.5 cm, smooth. Capsule slightly inclined, brownish orange, cylindric, slightly curved distally, 2-2.6 mm; annulus not separating; operculum long-conic or short-rostrate. Spores 14-16 µm.
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Cultivation

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Identifiers

LSID 35114612
WFO ID wfo-0001155195
COL ID N2YK
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INPN ID 434456
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Hypnum laetum Brachythecium laetum