Rhabdoweisia crenulata

(Mitten) H. Jameson

Rev. Bryol. 17: 6. 1890,.

Basionym: Didymodon crenulatus Mitten J. Proc. Linn. Soc., Bot., suppl. 1: 23. 1859
Treatment appears in FNA Volume 27. Treatment on page 429. Mentioned on page 428, 430.
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Plants 0.5–3 cm. Leaves lingulate, crisped when dry, 2–4 mm, broadly acute to obtuse, margins irregularly dentate distally, distal cells 14–20 µm wide, irregularly hexagonal, rather thin-walled. Seta 3–4 mm. Capsule 0.6–1 mm; peristome teeth narrowly lanceolate to subulate, smooth to faintly striolate, to 500 µm. Spores 18–20 µm.


Phenology: Capsules mature summer.
Habitat: Wet, shaded ledge
Elevation: moderate elevations (ca. 1100 m)

Discussion

Of conservation concern.

On the North American continent, this species is known from a single locality in the Appalachian Mountains (R. H. Zander 1966).

Selected References

None.

Lower Taxa

None.
... more about "Rhabdoweisia crenulata"
persistent +  and deciduous +
Wilfred B. Schofield +
(Mitten) H. Jameson +
short to long +
Didymodon crenulatus +
microphyllous +
pseudomonoicous +, dioicous +, autoicous +  and sexual +
reproduction +  and asexual +
cucullate +
brown +  and yellowbrown +
ovoid +  and oblong-cylindric +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
papillose +  and mammillose +
rectangular +
percurrent;excurrent +
subpercurrent +
autoicous +, sexual +  and asexual +
14um (?) +  and 20um (?) +
N.C. +, Europe +, Asia +  and Pacific Islands (Hawaii) +
moderate elevations (ca. 1100 m) +
Wet, shaded ledge +
broadly acute +  and obtuse +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
serrate to serrulate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
nonpitted +  and pitted +
toothed +  and forked +
pitted-striolate +
16 +  and single +
papillose +  and striolate +
smooth +  and faintly striolate +
narrowly lanceolate +  and subulate +
Capsules mature summer. +
hyaline;brownish +
undifferentiated +
Rev. Bryol. +
flexuose +  and straight +
cygneous +  and elongate +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
nearly spherical +  and slightly angled +
simple or;dichotomously irregularly branched +
0.2 cm2 mm <br />0.002 m <br /> (3 cm30 mm <br />0.03 m <br />) +
superficial +
Rhabdoweisia crenulata +
Rhabdoweisia +
species +
deciduous +
deciduous +
not forked +
green +  and brownish +