Didymodon rigidulus Hedw.

Rigid didymodon moss (en)

Species

Bryophytes > Pottiales > Pottiaceae > Didymodon

Characteristics

Plants green, often blackish. Stems to 2 cm, central strand present. Stem leaves appressed-incurved to weakly spreading when dry, spreading or not and not keeled when moist, monomorphic, long-ligulate, ovate-lanceolate, elliptic-lanceolate or long-lanceolate, broadly channeled across leaf or occasionally somewhat channeled along costa, 0.8-1.7(-3) mm, base scarcely differentiated to ovate, margins recurved in proximal 1/4-3/4, entire, apex acute to subulate, occasionally fragile; costa percurrent to excurrent as a long, thick, blunt subula, not much widened or tapering through the leaf, not strongly spurred, lacking a bulging adaxial pad of cells, adaxial costal cells quadrate, in (2-)3-4(-5) rows, guide cells in a single layer; basal laminal cells weakly differentiated medially, rectangular, walls thin to evenly thickened, proximal maginal cells little differentiated; distal laminal cells mostly 8-11 µm wide, 1:1, papillae absent or simple or occasionally 2-fid, lumens oval to rounded-quadrate, walls evenly thickened, moderately bulging on both sides or only abaxially, sometimes 2-stratose marginally or at apex of leaf, or throughout lamina. Specialized asexual reproduction by axillary, ovate to elliptic, multicellular gemmae. Seta 0.7-1.7 cm. Capsule 1-2 mm; peristome teeth 32 or 16 cleft to base or rudimentary or occasionally absent, filamentous or long-triangular, straight or weakly twisted, to 740 µm. Spores 9-12 µm. Distal laminal KOH reaction yellow-or red-orange.
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Foliage retention deciduous
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Hardiness (USDA) 8-12

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Images

Didymodon rigidulus unspecified picture

Distribution

Didymodon rigidulus world distribution map, present in Brazil

Identifiers

LSID 35132086
WFO ID wfo-0001164429
COL ID 35YW3
BDTFX ID -
INPN ID 5292
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Barbula waghornei Didymodon obtusifolius Trichostomum neglectum Desmatodon rupestris Didymodon barbula Didymodon fuscoviridis Didymodon gemnifer Didymodon rigiduliformis Didymodon rigidulus Didymodon viridissimus Didymodon rigidulus var. rigidulus

Lower taxons

Didymodon rigidulus subsp. andreaeoides Didymodon rigidulus subsp. cordata Didymodon rigidulus var. densus Didymodon rigidulus var. flaccidus Didymodon rigidulus var. glaucus Didymodon rigidulus var. laxus Didymodon rigidulus var. rigidus Didymodon rigidulus var. gracilis Didymodon rigidulus var. icmadophilus Didymodon rigidulus var. subulatus Didymodon rigidulus var. ditrichoides Didymodon rigidulus var. insidiosus Didymodon rigidulus var. validus