Cynodontium tenellum

(Schimper) Limpricht in F. J. Cohn

in F. J. Cohn, Krypt.-Fl. Schlesien 1: 425. 1877,.

Basionym: Cynodontium polycarpum var. tenellum Schimper Syn. Musc. Eur. ed. 2, 63. 1876
Synonyms: Cynodontium torquescens
Treatment appears in FNA Volume 27. Treatment on page 381. Mentioned on page 378, 380.

Stems (0.5–) 1–2 (–3) cm. Leaves 2–3 (–3.5) mm, linear-lanceolate, apex more or less acute; margin weakly recurved for a short portion of the leaf length or sometimes almost plane, 2 (–3) -stratose; laminal cells smooth or with scattered papillae distally, mainly on the abaxial side, distal cells about 7–10 µm. Perigonium sessile. Seta (0.5–) 0.6–0.7 (–1) cm, straight wet or dry. Capsule straight and erect, not strumose; annulus weakly developed.


Phenology: Capsules mature summer.
Habitat: Rocks, tree boles, soil
Elevation: moderate elevations

Distribution

V27 541-distribution-map.gif

Greenland, Alta., B.C., Man., Nfld. and Labr., N.W.T., N.S., Nunavut, Ont., Que., Sask., Yukon, Alaska, Maine, Minn., Mont., S.Dak., Eurasia, Atlantic Islands (Iceland)

Discussion

The distribution of Cynodontium tenellum is fairly well understood for Canada but not for the United States because of confusion with 3. C. alpestre (see discussion thereunder). The present treatment follows W. C. Steere (1978) and R. R. Ireland et al. (1987). The problem in nomenclature of C. tenellum is still unresolved (G. S. Mogensen 1980; B. H. Allen 2005).

Selected References

None.

Lower Taxa

None.
... more about "Cynodontium tenellum"
reddish-brown +
persistent +  and deciduous +
large +  and small +
not deciduous +
Patricia M. Eckel +
(Schimper) Limpricht in F. J. Cohn +
short to long +
rectangular +  and elongate +
Cynodontium polycarpum var. tenellum +
microphyllous +
pseudomonoicous +, dioicous +, autoicous +  and sexual +
reproduction +  and asexual +
cucullate +
deeply furrowed +  and sulcate +
longitudinally broadly +  and smooth +
not strumose +
differentiated +
deciduous +
papillose +  and mammillose +
differentiated +
percurrent;excurrent +
toothed +
serrulate +  and entire +
Greenland +, Alta. +, B.C. +, Man. +, Nfld. and Labr. +, N.W.T. +, N.S. +, Nunavut +, Ont. +, Que. +, Sask. +, Yukon +, Alaska +, Maine +, Minn. +, Mont. +, S.Dak. +, Eurasia +  and Atlantic Islands (Iceland) +
moderate elevations +
Rocks, tree boles, soil +
with scattered papillae +  and smooth +
falcate-secund +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
linear-lanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
erect-flexuose +
acuminate +, keeled +  and tubulose +
2(-3)-stratose +
cladautoicous +, autoicous +, sexual +  and asexual +
rostrate +  and long-rostrate +
nonpitted +  and pitted +
toothed +  and forked +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
acute +  and rounded-obtuse +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
nearly +, 0 +  and 2/3 +
papillose +  and striolate +
Capsules mature summer. +
undifferentiated +
in F. J. Cohn, Krypt.-Fl. Schlesien +
hyaline +  and reddish +
roughened +  and smooth +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
dry +, wet +  and straight +
straight +
curved-cygneous +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
spheric +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
superficial +
Cynodontium torquescens +
Cynodontium tenellum +
Cynodontium +
species +
deciduous +
papillose +
lanceolate +
yellowish green sometimes brownish +  and dark +