Hypnum revolutum var. ravaudii

(Boulay) Ando

Lindbergia 8: 62. 1982.

Basionym: Hypnum ravaudii Kindberg Fl. Crypt. Est, Musc., 267. 1872 (as ravaudi)
Synonyms: H. filiforme H. revolutum var. dolomiticum Mönkemeyer
Treatment appears in FNA Volume 28. Treatment on page 547. Mentioned on page 546.

Plants relatively small. Stems 2–3 (–5) cm, regularly pinnate, branches 0.2–0.5+ cm. Stem-leaves broadly ovate-oblong, not plicate, 0.5–1 mm; margins plane or sometimes revolute basally; costa less distinct; medial laminal cells 25–40 × 4 µm.


Phenology: Capsules mature Jul–Sep.
Habitat: Open sites, earth, rock faces, epiphytic on tree bases, logs in forest
Elevation: moderate to high elevations

Distribution

V28 852-distribution-map.gif

Alta., B.C., Colo., Europe, e Asia, Antarctica

Discussion

Distribution for variety ravaudii is based on that given by H. Ando (1973), but it is doubtless infrequently scattered through the range of the species, producing sporophytes in summer. The variety is troublesome to determine because of its lack of the characteristic revolute leaf margins (except sometimes near the base), and the costa is difficult to discern.

Selected References

None.

Lower Taxa

None.
differentiated +
acuminate +
Wilfred B. Schofield† +
(Boulay) Ando +
not auriculate +  and not decurrent +
Hypnum ravaudii +
dioicous +  and sexual +
ovate +  and not undulate +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
cucullate +
yellowish;brown +
inclined +  and horizontal +
oblong-cylindric +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
hyaline +  and not pigmented +
3 +  and 2 +
rectangular;subquadrate +
enlarged +
differentiated +
rudimentary +
distinct +
dioicous +, autoicous +, sexual +  and asexual +
Alta. +, B.C. +, Colo. +, Europe +, e Asia +  and Antarctica +
moderate to high elevations +
fused +  and free +
filamentous +
Open sites, earth, rock faces, epiphytic on tree bases, logs in forest +
ovate +  and lanceolate or subulate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
ovate-oblong +
0 (?) +  and 1/4 (?) +
distinct +
dioicous +, autoicous +  and sexual +
Capsules mature Jul–Sep. +
decurrent +
lanceolate;ovate +
papillose +  and smooth +
yellowish +  and reddish +
elongate +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Illustrated +
falcate-secund +
0.5mm;1.8mm +
narrowed +, ovate-oblong +  and ovate +
0.4mm;0.6mm +
secund +, not +  and complanate-foliate +
falcate-secund +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
yellow-green +
straight +
creeping +, suberect +  and erect +
ovate +  and not undulate +
2 cm20 mm <br />0.02 m <br /> (?) +  and 3 cm30 mm <br />0.03 m <br /> (?) +
differentiated +
H. filiforme +  and H. revolutum var. dolomiticum +
Hypnum revolutum var. ravaudii +
Hypnum revolutum +
variety +
rusty brownish +  and yellowish +
dull +  and glossy +