Pseudocrossidium obtusulum (Lindb.) H.A.Crum & L.E.Anderson

Pseudocrossidium moss (en)

Species

Bryophytes > Pottiales > Pottiaceae > Pseudocrossidium

Characteristics

Stems to 2 cm. Stem leaves ovate to ovate-deltoid, 0.7-1.2 mm, distal margins once to almost twice-revolute; apex broadly acute; costa ending in an apiculus, adaxial surface of costa at mid leaf convex, with 2-3 guide cells; distal laminal cells 10-13 µm wide, 1:1. Specialized asexual reproduction occasionally present as spheric to clavate gemmae, 40-50 µm, borne on the adaxial surface of the costa, or as rhizoid-borne brood bodies. Perichaetial leaves not or weakly differentiated. Seta 1-2 cm. Capsule 1-2 mm, peristome of 32 linear, yellow teeth, straight or twisted counterclockwise a half turn, operculum conic-rostrate. Spores yellow, essentially smooth, 8-12 µm.
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Identifiers

LSID 35186210
WFO ID wfo-0001196917
COL ID 4NV86
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INPN ID 434218
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Synonyms

Barbula obtusula Desmatodon ellesmerensis Pseudocrossidium obtusulum Barbula platyneura Pseudocrossidium revolutum var. obtusulum