Ptychostomum longisetum (blandow ex Schwägr.) J.r.spence

Species

Bryophytes > Bryales > Bryaceae > Ptychostomum

Characteristics

Plants in dense or open turfs, green or yellow-green. Stems 1-2(-3) cm, comose, innovations comose or somewhat elongate and evenly foliate; not strongly radiculose. Leaves green or yellow-green, twisted to contorted when dry, ovate to broadly ovate-lanceolate, weakly concave, 1-2(-3) mm, enlarged toward stem apex; base not or weakly decurrent; margins revolute to mid leaf or beyond, limbidium strong, in 2 or 3 rows; apex acute; costa short-excurrent, awn , denticulate; proximal laminal cells 3-4:1, same width or sometimes wider than more distal cells; medial and distal cells rhomboidal, 12-18 µm wide, 2-3:1, walls usually thin to firm. Specialized asexual reproduction absent. Sexual condition synoicous. Seta 3-6(-8) cm. Capsule brown, elongate-pyriform, symmetric, 2-4 mm, mouth yellow; operculum conic, apiculate; peristome well developed; exostome teeth yellow basally, hyaline distally, lamellae usually straight mid tooth, pores absent along mid line; endostome not adherent to exostome, basal membrane high, less than 1/2 exostome height, segments with broadly ovate perforations, cilia short, rudimentary. Spores variable in size, (38-)40-50 µm, finely papillose, pale yellow-brown or green.
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Identifiers

LSID 35216078
WFO ID wfo-0001213272
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Wikipedia (EN)
Wikipedia (FR)

Synonyms

Ptychostomum longisetum