Porotrichum elongatum (Welw. & Duby) A.Gepp

Species

Bryophytes > Hypnales > Neckeraceae > Porotrichum

Characteristics

Plants medium-sized, forming loose colonies, green to yellow-green; corticolous. Primary stems creeping; secondary stems erect, 30-120 mm long, branching irregular above stipe, pinnate or lower branches irregularly once-pinnate; in section round to oval, central strand small, inner cortical cells thin-walled, hyaline, in 10-12 rows, outer cortical cells thick-walled, yellow, in 4-6 rows. Leaves spreading wet, appressed dry; stem leaves broadly ovate to elliptical, 1.0-1.5 mm long; short acuminate; rounded at base; margins plane to erect above, serrulate above; branch leaves similar to stem leaves but smaller and more elliptical, 0.5-1.0 mm long; acute to acuminate; rounded at base; margins plane, serrulate above. Costa smooth but ending below apex in a short dorsal spine; in section elliptical. Upper laminal cells rhomboidal to fusiform, homogeneous, 20-40 µm long, 5-7 µm wide, walls thin, smooth; basal cells fusiform and longer but not forming distinct groups, greenish, walls ± thickened, smooth; alar cells not forming distinct groups. Perigonia and perichaetia not seen. Sporophyte not found in southern Africa but described as: Seta erect, to 14 mm long. Capsule erect, elliptical, 1.5-1.8 mm long. Peristome teeth 700-750 µm, papillose; endostome segments almost as long as teeth, cilia absent. Operculum conic-rostrate, 1.0-1.5 mm long. Calyptra cucullate, smooth, 2.0-2.5 mm long. Spores round, 10-15 µm, finely papillose, light yellow.
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Distribution

Porotrichum elongatum world distribution map, present in South Africa

Identifiers

LSID 35142159
WFO ID wfo-0001170499
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INPN ID 839497
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Thamnium pobeguinii Porotrichum robillardii Pinnatella vignololutatii Porotrichum comorense Porotrichum jollyi Porotrichum stuhlmannii Porotrichum elongatum