Oreas martiana

(Hooker) Bridel

Bryol. Univ. 1: 383. 1826,.

Basionym: Weissia martiana Hooker Musci Exot. 2: plate 104. 1819
Treatment appears in FNA Volume 27. Treatment on page 425. Mentioned on page 380.

Stems 1.5–8.5 mm. Leaves 1.3–2 mm, distal laminal cells 6–10 µm. Perichaetial leaves 2–2.5 mm. Seta 3–7 mm. Capsule 0.6–0.9 mm; annulus of three rows of pale, thick-walled, quadrate cells; operculum 0.4–0.7 mm; peristome teeth 190–210 µm. Spores 16 µm.


Phenology: Capsules mature Jul–Aug.
Habitat: Alpine tundra, moderate to high elevations (ca. 0–4200 m)

Discussion

Oreas martiana is easily recognized by its golden color, the very thick and deep polsters with only a few millimeters of living leaves and much brown material below. In fruit it is unmistakable, with pendent, cygneous setae and strongly ribbed capsules. In the Front Range of Colorado it appears to be particularly abundant.

Selected References

None.

Lower Taxa

None.

"broader" is not a number.

... more about "Oreas martiana"
William A. Weber +
(Hooker) Bridel +
short to long +
rectangular +
Weissia martiana +
microphyllous +
pseudomonoicous +, dioicous +, autoicous +  and sexual +
reproduction +  and asexual +
cucullate +
pendent +  and erect +
subglobose +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
thick-walled +
papillose +  and mammillose +
autoicous +  and sexual +
quadrate +
not differentiated +
entire;shortly excurrent +
roundedquadrate +
Greenland +, Alta. +, B.C. +, Alaska +, Colo. +, Europe +  and Asia +
Alpine tundra, moderate to high elevations (ca. 0–4200 m) +
falcate-secund +
keeled +, lance-acuminate +  and crisped +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
orangebrown +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
nonpitted +  and pitted +
toothed +  and forked +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
pitted-striolate +
papillose +  and striolate +
pale +, yellowish-brown +  and brown +
lance-acuminate +
Capsules mature Jul–Aug. +
undifferentiated +
Bryol. Univ. +
curved +  and straight +
cygneous +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
spheric +
simple or;dichotomously irregularly branched +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.85 cm8.5 mm <br />0.0085 m <br />) +
superficial +
Oreas martiana +
species +
deciduous +
lanceolate +
brown +  and yellow-green +