Barbula orizabensis

Müller Hal.

Linnaea 40: 638. 1876,.

Treatment appears in FNA Volume 27. Treatment on page 530. Mentioned on page 529.

Stems 1.5–2.5 cm. Leaves firm when wet, long-ligulate to broadly lanceolate from an oblong base, 1.5–2 mm, base oblong but not strongly sheathing, margins recurved or revolute to apex or nearly so, apex broadly acute to rounded; costa excurrent as a stout mucro, abaxial costal surface with scattered solid papillae, hydroids present; distal laminal cells firm-walled, quadrate, 7–9 µm wide, 1: 1, papillose. Specialized asexual reproduction by spheric or occasionally elliptic gemmae on stalks in leaf-axils, 30–35 µm long. [Perichaetial leaves weakly differentiated, antheridiate plants long-stemmed. Seta 0.9–1.5 cm. Theca 1–2.5 mm. Spores 8–11 µm.]


Habitat: Disintegrating rock
Elevation: moderate to high elevations (1000-2000 m)

Distribution

V27 760-distribution-map.gif

Ariz., Mexico, West Indies

Discussion

In the flora area, Barbula orizabensis is known only from Santa Cruz County, Penna Dam, I. Haring 11984, 15 Feb. 1957 (CANM). This species replaces B. unguiculata at approximately the Mexican border. The presence of gemmae is apparently constant and will best distinguish it from the latter species.

Selected References

None.

Lower Taxa

None.
... more about "Barbula orizabensis"
quadrate +  and elongate +
differentiated +
long-excurrent +  and short-excurrent +
apiculate +  and entire +
Richard H. Zander +
Müller Hal. +
short;elongate +
semilunar +
papillose +  and smooth +
usually slightly wider +
oblong;oblong +
differentiated +
broadened +
Pottiaceae tribe Barbuleae +
obovoid +
cucullate +
stegocarpous +
dioicous +  and sexual +
flat to bulging +
thin;evenly thickened +
elongate-rhomboid +  and elongate +
tomentose +  and bare +
rectangular +
quadrate;quadrate +
Ariz. +, Mexico +  and West Indies +
moderate to high elevations (1000-2000 m) +
differentiated +
multicellular +
Disintegrating rock +
yellow +  and orange-red or red +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
concave;keeled;channeled;ovoid;lanceolate or lingulate +
long-ligulate +
lanceolate +
reduced +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
dentate +  and entire +
denticulate +, entire +  and plane +
long-conic +
photosynthetic +
2 +  and 3 +
lateral +  and terminal +
lateral +  and terminal +
red +, orange +  and yellow +
consisting of 16 mostly 2 times cleft spiculose striate or papillose lanceolate teeth , , , , +  and rudimentary +
straight +
elongate +
0.5 cm5 mm <br />0.005 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
2 +  and 1 +
yellowish orange +, yellow +  and laminal +
rounded-triangular +  and rounded-pentagonal +
short +  and elongate +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
Barbula orizabensis +
species +
ovate;long-cylindric +
red +  and yellow +
thin +  and evenly thickened +
stemless +  and perigoniate +
yellowish-brown;reddish-brown +
plant +, forming cushions +  and cespitose +
occasionally smaller than the perichaetiate +