Niphotrichum canescens subsp. canescens

Treatment appears in FNA Volume 27. Treatment on page 287. Mentioned on page 288.

Plants mostly large. Leaves broadly ovatelanceolate to ovate, often distinctly curved throughout the shoots, very broadly canaliculate distally, hyaline in the uppermost part and merging with the awn, making it very broad; awns not or weakly decurrent, distinctly denticulate and spinulose towards the apex.


Habitat: Sandy or gravelly soils and fine rock-debris, acidic or calcareous substrates in rather dry situations, soil or humus over rock ledges along roadsides, gritty soil at lake shores, grassland and heaths, exposed boulders along streams and creeks and on dunes
Elevation: low to high elevations (0-4200 m)

Distribution

V27 394-distribution-map.gif

Alta., B.C., Man., N.B., Nfld. and Labr., N.W.T., Ont., Que., Sask., Yukon, Alaska, Colo., Idaho, Maine, Mich., Mont., N.H., N.Y., Oreg., Utah, Vt., Wash., Wyo., Europe, Asia (Siberia)

Discussion

Subspecies canescens occurs across the continent from British Columbia, Washington, and Oregon to Newfoundland, with the southernmost extensions to the Rocky Mountains of Colorado and the northernmost station at Lake Iliamna in southern Alaska. It is highly variable; doubtless the differing phenotypes are reactions to varying environmental conditions. The most common phenotype comprises robust plants with broad and typically concave leaves that are falcate along the whole stem and are long-pilose with awns that merge with large hyaline apical parts of the leaves. The opposite extreme is plants with thin shoots and almost elliptical, non-falcate, spoon-shaped, and cucullate leaves that have a short and strait awn or are muticous.

Selected References

None.

Lower Taxa

None.

"broad" is not a number.

not +  and hyaline +
inflated +  and decurrent +
Ryszard Ochyra +  and Halina Bednarek-Ochyra +
(Hedwig) Bednarek-Ochyra & Ochyra in R. Ochyra et al. +
capillaceous +
flexuose +  and straight +
not reflexed +
papillose +
denticulate +  and decurrent +
nodulose;oblate;quadrate;elongate +
rectangular +
divided +
Trichostomum canescens +
2;3;2;numerous +
papillose +
linear-subulate +  and tuft-like +
undifferentiated +
naked +, plicate +  and smooth +
lobed +, lacerated +, mitrate-campanulate +, mitrate +  and cucullate +
small;large +
furrowed +  and smooth to somewhat +
narrowly ellipsoid;cylindric +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
straight-walled +  and thin-walled +
hyaline +  and yellowish hyaline +
20 (?) +  and 30 (?) +
elongate +, inflated +  and rounded +
enlarged +
subpercurrent +
1/2 +  and 3/4 +
convex +  and flattened +
90um +  and 120um +
Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. +, N.W.T. +, Ont. +, Que. +, Sask. +, Yukon +, Alaska +, Colo. +, Idaho +, Maine +, Mich. +, Mont. +, N.H. +, N.Y. +, Oreg. +, Utah +, Vt. +, Wash. +, Wyo. +, Europe +  and Asia (Siberia) +
low to high elevations (0-4200 m) +
Sandy or gravelly soils and fine rock-debrSandy or gravelly soils and fine rock-debris, acidic or calcareous substrates in rather dry situations, soil or humus over rock ledges along roadsides, gritty soil at lake shores, grassland and heaths, exposed boulders along streams and creeks and on dunesders along streams and creeks and on dunes +
0.28 cm2.8 mm <br />0.0028 m <br /> (0.33 cm3.3 mm <br />0.0033 m <br />) +
thick-walled +  and sinuose +
2mm;2.8mm +
canaliculate +, broadly ovatelanceolate +  and ovate +
muticous +, acute +  and rounded-obtuse +
long-subulate +
piliferous;obtuse;acute +
cribrose +  and perforated +
lanceolate;linear +
in R. Ochyra et al., Cens. Cat. Polish Mosses, +
dark red +  and reddish-brown +
sinistrorse +  and erect +
papillose +  and smooth +
short to long +
0.5 cm5 mm <br />0.005 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
ornamented +  and smooth +
globose +
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Bryum canescens +, Grimmia canescens +  and Racomitrium canescens +
Niphotrichum canescens subsp. canescens +
Niphotrichum canescens +
subspecies +
divided +
yellowbrown;yellow-green;green;dull +