Ditrichum ambiguum Best

Ambiguous ditrichum moss (en)

Species

Bryophytes > Dicranales > Ditrichaceae > Ditrichum

Characteristics

Plants in loose to dense tufts, green to yellowish green, becoming yellowish brown with age, dull. Stems 0.7-2 cm, with a few reddish rhizoids at the base. Leaves erect-spreading, somewhat crisped when dry, 1.5-4.5 mm, lanceolate to linear-lanceolate, channelled, lamina with a few scattered 2-stratose cells midway between margins and costa in median to distal part of leaf; margins broadly recurved from the base to near mid lamina, weakly to strongly serrulate from mid lamina to apex, entire or serrulate at the somewhat blunt apex, 2-stratose distally and sometimes extending inward for several cells; costa distinct, percurrent, occupying 1/6-1/3 the width of the leaf base; lamina cells thick-walled, distal cells quadrate, irregularly sub-quadrate to short-rectangular, 8-24 × 4-8 µm, becoming broader and longer near the base. Specialized asexual reproduction unknown. Sexual condition dioicous. Seta red, 1-2 cm, erect. Capsule erect, usually straight and symmetric or sometimes slightly curved, dark brown or reddish, cylindric, 1.5-3(-3.2) mm, occasionally slightly enlarged at base; operculum rostrate, 0.4-0.8 mm; peristome red, 200-500(-800) µm, twisted when dry, teeth divided to near base into two equal filaments, strongly papillose to spiculose. Spores round, 6-13 µm, appearing smooth to minutely papillose.
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Foliage retention deciduous
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Identifiers

LSID 35132668
WFO ID wfo-0001164832
COL ID 36Z9S
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Wikipedia (EN)
Wikipedia (FR)

Synonyms

Ditrichum ambiguum