Grimmia crinitoleucophaea

Cardot

Rev. Bryol. 17: 18. 1890,.

Treatment appears in FNA Volume 27. Treatment on page 232. Mentioned on page 226, 231, 233, 247.

Plants in loose tufts, olivaceous to black. Stems 0.5–0.9 cm. Leaves oblong-ovate to oblong-lanceolate, 1.6–2 × 0.3–0.6 mm, concave, awn 0.3–0.6 mm; basal juxtacostal laminal cells quadrate to long-rectangular, straight, thin-walled; basal marginal laminal cells quadrate to short-rectangular, straight, thin-walled; medial laminal cells rounded, straight, thick-walled; distal laminal cells 2-stratose, marginal cells 2-stratose. Sexual condition dioicous. Seta sigmoid, 0.3–0.5 mm. Capsule usually present, exothecial cells thin-walled, annulus of 2–3 rows, rectangular, thick-walled, revoluble, operculum obliquely rostrate, peristome present, rudimentary, teeth composed of only a few rows of cells, perforated, papillose.


Habitat: Basalt, granite, schist and limestone
Elevation: moderate to high elevations (500-2100 m)

Distribution

B.C., N.W.T., Yukon, Ariz., Calif., Colo., Nev., N.Mex., Utah, Wash., Eurasia

Discussion

In North America, Grimmia crinitoleucophaea is known from only scattered localities in the American west and in three extremely disjunct sites in Canada: in southern British Columbia, near the Keele River of the Northwest Territories, and along the Dempster Highway in the Yukon. It is found on a broad range of both basic and acidic rock types. Its subgeneric placement is problematic. Gametophytically the species is inseparable from G. tergestina, of subg. Litoneuron. Indeed, based on areolation and leaf shape, L. Loeske (1913–1914, part 1) placed it as a subspecies of the latter. This close similarity may account for reports by J. Muñoz and F. Pando (2000) and D. H. Norris and J. R. Shevock (2004) of G. tergestina from North America. We have seen all cited specimens in these papers and they all represent G. crinitoleucophaea or G. ovalis. Therefore, we reject G. tergestina being in North America. Sporophytic characters of G. crinitoleucophaea (a short, arcuate to sigmoid seta that is eccentrically attached to the capsule, an immersed ventricose capsule with a small, mitrate calyptra, and 3–4 large stomata) clearly indicate membership in subg. Grimmia. Further, G. crinitoleucophaea and G. tergestina have never been collected together, suggesting that the two are also ecologically distinct. Despite its dioicous sexuality, G. crinitoleucophaea is usually fertile; its rudimentary peristome and large annulus are thus readily evident. Its 2-stratose laminal stratification separates it from specimens of G. plagiopodia that may have broken peristome teeth.

Selected References

None.

Lower Taxa

None.
... more about "Grimmia crinitoleucophaea"
revoluble +  and thick-walled +
deciduous +  and persistent +
well-defined +
rectangular +
differentiated +
Roxanne I. Hastings +  and Henk C. Greven +
Cardot +
only rarely longer +
not papillose +
toothed +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
sinuous +  and straight to sometimes +
sinuose-nodulose;quadrate;elongate +
oblate;elongate +
divided +
undifferentiated +
plicate +  and smooth +
less +  and 1/2 +
not papillose +
small;medium +
sulcate +  and smooth +
pendent +  and erect +
striate +  and smooth +
ventricose +
thin +  and thick +
thick-walled +  and thin-walled +
quadrate +  and rectangular +
excurrent;percurrent;excurrent +
subpercurrent +
reniform +, elliptical +  and terete +
usually not markedly larger +
B.C. +, N.W.T. +, Yukon +, Ariz. +, Calif. +, Colo. +, Nev. +, N.Mex. +, Utah +, Wash. +  and Eurasia +
moderate to high elevations (500-2100 m) +
reproduction +  and asexual +
autoicous +  and sexual +
Basalt, granite, schist and limestone +
papillose +, mammillose +  and smooth +
specialized +
dioicous +, autoicous +  and sexual +
1.6mm;2mm +
concave +, oblong-ovate +  and oblong-lanceolate +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
1;multistratose +
recurved +  and incurved +
dioicous +  and sexual +
thick-walled +  and sinuose +
thick-walled +  and sinuose +
not +  and enlarged +
not +  and differentiated +
lanceolate;linear +
Rev. Bryol. +
straight +
papillose +  and smooth +
short to long +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
ornamented +  and smooth +
globose +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
3 +  and 4 +
muticous;long-awned +
Dryptodon +  and Hydrogrimmia +
Grimmia crinitoleucophaea +
Grimmia subg. Grimmia +
species +
papillose +