Ptychostomum acutiforme (Limpr.) J.R.Spence

Species

Bryophytes > Bryales > Bryaceae > Ptychostomum

Characteristics

Plants in dense or open turfs, green, yellow-green, or brown. Stems 1-2 cm, fertile stems comose, innovations evenly foliate. Leaves yellow-green to yellow-brown, somewhat distant, weakly contorted to somewhat imbricate when dry, ovate-lanceolate, concave or sometimes flat, 0.5-2(-3) mm, enlarged toward stem apex; base red near costa, green otherwise, not decurrent; margins plane, limbidium moderately strong, in (1-)2-3 rows; apex acute to acuminate; costa not reaching apex to percurrent, apiculus sometimes present, short, slender; proximal laminal cells long-rectangular, (3-)4-5:1; medial cells somewhat longer, walls incrassate; distal cells 18-25 µm wide, 2-3:1, walls thin to incrassate. Specialized asexual reproduction absent. Sexual condition autoicous. Seta red-brown, 2-4 cm, stout, straight to somewhat flexuose. Capsule red-brown or red, ovate, symmetric, 2-3 mm, mouth yellow to yellow-orange; operculum conic, apiculate; peristome reduced; exostome teeth yellow basally, hyaline distally, lamellae ± straight mid tooth, pores absent along mid line; endostome not adherent to exostome, basal membrane less than 1/2 exostome height, segments with lanceolate to slitlike perforations, cilia absent or rudimentary. Spores with size often variable in same capsule, 28-32 µm, yellow or brown.
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Cultivation

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Identifiers

LSID 35217542
WFO ID wfo-0001214230
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Wikipedia (FR)

Synonyms

Ptychostomum acutiforme