Cinclidium subrotundum

Lindberg

Bot. Not. 1868: 72. 1868.

Illustrated
Treatment appears in FNA Volume 28. Treatment on page 218. Mentioned on page 217.

Plants 3–8 (–12) cm. Stems dark reddish-brown. Leaves green, reddish-brown, or black when old, erect-spreading, ± flat, not strongly reflexed when moist, broadly elliptic, ± orbicular, spatulate, occasionally ovate or obovate, 3.5–6 mm; base short-decurrent; margins plane or weakly recurved, 2-stratose or 3-stratose; apex rounded, obtuse, or rarely retuse, apiculate or sometimes not, apiculus blunt; costa percurrent, excurrent, or rarely subpercurrent; medial laminal cells elongate, (40–) 70–110 µm, in diagonal rows, weakly collenchymatous; marginal cells short-linear or linear, in 3 or 4 rows. Sexual condition synoicous. Seta yellowish, 4–6 cm. Capsule yellowish, subglobose, 1.5–2.5 mm. Spores 25–70 µm.


Phenology: Spores 25-70 µm, mature summer.
Habitat: Peat and deep organic soil to shallow wet mineral soil on rock in fens, along river banks
Elevation: low to moderate elevations

Distribution

V28 349-distribution-map.gif

Greenland, Alta., B.C., Man., Nfld. and Labr., N.W.T., Nunavut, Que., Yukon, Alaska, Mich., Europe

Discussion

Cinclidium subrotundum is distinguished by its broadly elliptic, nearly orbicular or spatulate leaves usually ending in a small, blunt apiculus. When present, the subglobose capsules are also diagnostic.

Selected References

None.

Lower Taxa

None.
... more about "Cinclidium subrotundum"
blackish +, orange-yellow +, reddish-brown +, yellowish-brown +, yellowish green +, red +, brown +  and yellow +
sometimes not +  and apiculate +
Retuse (?) +, Obtuse (?) +  and Rounded (?) +
Terry T. McIntosh +  and Steven G. Newmaster +
Lindberg +
u--shaped +
short-decurrent +
decurrent +
cucullate +
subglobose +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
undifferentiated +
2 (?) +  and 1 (?) +
nodulose +
excurrent +  and percurrent +
subpercurrent +
toothed +
Greenland +, Alta. +, B.C. +, Man. +, Nfld. and Labr. +, N.W.T. +, Nunavut +, Que. +, Yukon +, Alaska +, Mich. +  and Europe +
low to moderate elevations +
greenish yellow +
lanceolate-acuminate +
Peat and deep organic soil to shallow wet mineral soil on rock in fens, along river banks +
crowded +  and distant +
black +, reddish-brown +  and green +
obovate +, ovate +, spatulate +, orbicular +  and elliptic +
larger +  and small +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
3-stratose +  and 2-stratose +
reddish-brown +, brown +  and green +
synoicous +  and sexual +
rectangular +, rhomboidal +  and linear +
hemispheric +
Spores 25-70 µm, mature summer. +
smaller +  and larger +
flexuose +
elongate +
4 cm40 mm <br />0.04 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Illustrated +
spheric +
not dendroid +, branching +  and simple +
dark reddish-brown +
Cinclidium subrotundum +
Cinclidium +
species +
blunt +  and sharp +
collenchymatous +