Gemmabryum badium

(Bruch ex Bridel) J. R. Spence

Phytologia 91: 497. 2009.

Basionym: Bryum caespiticium var. badium Bruch ex Bridel Bryol. Univ. 1: 850. 1827
Synonyms: B. badium (Bruch ex Bridel) J. R. Spence Ptychostomum badium
Treatment appears in FNA Volume 28. Treatment on page 131.

Plants large. Stems 0.1–2 (–3) cm. Leaves strongly concave, 0.5–2 (–3) mm; margins plane to strongly revolute, limbidium distinct to weak, of 1 or 2 rows of elongate incrassate cells; apex not hyaline with age; costa long-excurrent, awn brown, yellowbrown, or sometimes hyaline, denticulate, more than 1/2 leaf length, often as long as leaf; proximal laminal cells abruptly quadrate to short-rectangular, 1–2: 1 away from costa, 2–4: 1 along costa; medial and distal cells long-hexagonal, 12–18 (–22) µm wide, (3–) 4–5: 1. Specialized asexual reproduction by deciduous brood branchlets in distal leaf-axils, rhizoidal tubers absent. [Capsule with endostome segments bright to pale-yellow. Spores 14–18 µm].


Habitat: Dry soil, rock, semiarid climates
Elevation: moderate to high elevations (1000-2000 m)

Distribution

V28 204-distribution-map.gif

Calif., Nev., w Eurasia (including Middle East)

Discussion

Gemmabryum badium is similar to G. caespiticium but distinguished by much longer awns, more strongly concave leaves, and absence of rhizoidal tubers. Gemmabryum badium has only recently been recognized from collections in California and Nevada, and is likely to be found elsewhere in North America.

Selected References

None.

Lower Taxa

None.

"narrower" is not a number."narrow" is not a number.

... more about "Gemmabryum badium"
not hyaline +
John R. Spence +
(Bruch ex Bridel) J. R. Spence +
hyaline +, yellowbrown +  and brown +
/2 +  and 1 +
denticulate +
reduced +
curved +  and straight +
not decurrent +
Bryum caespiticium var. badium +
deciduous +
cucullate +
not zygomorphic +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
long-exserted +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
elongate +
incrassate +
appendiculate +
long-excurrent +
subpercurrent +
inflated +
hexagonal;rhomboidal +
Calif. +, Nev. +  and w Eurasia (including Middle East) +
moderate to high elevations (1000-2000 m) +
hyaline;pale-yellow +
not adherent +
yellow +  and brown +
Dry soil, rock, semiarid climates +
not inflated +  and tapered +
not +  and differentiated +
polyoicous +, monoicous +, dioicous +  and sexual +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
concave +
vegetative +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
multistratose +, 2-stratose +  and 1-stratose +
entire +  and serrulate +
plane +  and strongly revolute +
1 (?) +, 4 (?) +  and 5 (?) +
short-rectangular +  and quadrate +
rostrate +, apiculate +, short-conic +  and long-convex +
lateral +  and terminal +
lateral +  and terminal +
diplolepidous-alternate +
abruptly quadrate +  and short-rectangular +
differentiated +
redbrown +  and red +
smooth;papillose +
synoicous +, dioicous +  and sexual +
synoicous +, dioicous +  and sexual +
flexuose +  and straight +
not geniculate +
light-brown +
germinating +
differentiated +
gemmiform +
0.1 cm1 mm <br />0.001 m <br /> (2 cm20 mm <br />0.02 m <br />) +
B. badium +  and Ptychostomum badium +
Gemmabryum badium +
Gemmabryum sect. Caespitibryum +
species +
acuminate;lanceolate +
distinct +
several +  and common +
straight +
specialized +
sinuate +
incrassate +
pale green +  and red-green +