Microbryum vlassovii

(Lazarenko) R. H. Zander

Bull. Buffalo Soc. Nat. Sci. 32: 240. 1993,.

Basionym: Phascum vlassovii Lazarenko Zhurn Inst. Bot. Vseukraïns’k. Akad. Nauk 26/27: 196. 1938
Treatment appears in FNA Volume 27. Treatment on page 631. Mentioned on page 628.

Distal laminal cells strongly bulging superficially in medial portion of leaf, adaxial surface of costa strongly mammillose, beset with “bottle-shaped” cells. Seta short, nearly absent. Capsule nearly spherical apiculate, cleistocarpous. Spores papillose, ca. 18–24 µm.


Habitat: Substrate and elevational range unknown

Discussion

Sporophytes were immature in the area of the flora. Microbryum vlassovii was reported from British Columbia by T. T. McIntosh (1989) and Spain by M. N. Jiménez et al. (1990), otherwise known from Armenia, central Asia and the Ukraine. The long, smooth cell making up the end of the mucro is reminiscent of that of Chenia. The rhizoids bear distinctive unicellular hemispherical excrescences that may serve as tubers. Tortula acaulon may have ampullose adaxial costal cells (T. L. Blockeel 1995), but is yellow in KOH.

Selected References

None.

Lower Taxa

None.
... more about "Microbryum vlassovii"
elongate +, shortrectangular +  and quadrate +
weakly concave +  and broadly channeled +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
of 1;2 rows +
of 1-2 rows +  and differentiated +
long-excurrent +  and short-excurrent +
Richard H. Zander +
(Lazarenko) R. H. Zander +
round +  and semicircular +
papillose +  and smooth +
usually slightly wider +
usually ovate;oblong +
not differentiated +
Phascum vlassovii +
obovoid +
mitrate +  and conic-cucullate +
cleistocarpous +
spherical +
synoicous +, paroicous +, monoicous +, sexual +  and asexual +
vesiculose +  and parenchymatous +
3 (?) +  and 6 (?) +
bottle--shaped +
enlarged +
tomentose +  and bare +
percurrent +  and excurrent +
serrulate +  and entire +
rhomboidal;shortrectangular;quadrate;hexagonal +
enlarged +  and small to somewhat +
B.C. +, Calif. +  and Asia +
differentiated +
multicellular +
Substrate and elevational range unknown +
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 +
spathulate +  and ovate +
reduced +
occasionally less papillose and somewhat thicker walled +
dentate +  and entire +
papillose +
photosynthetic +
branching +, hollow +  and simple +
1 +  and 6 +
flattened +  and 2-fid +
lateral +  and terminal +
lateral +  and terminal +
red +, orange +  and yellow +
1 (?) +  and 2 (?) +
not differentiated +
Bull. Buffalo Soc. Nat. Sci. +
straight +
elongate +
short;elongate +
2 +  and 1 +
red +  and laminal +
rounded-triangular +  and rounded-pentagonal +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
Phascum sect. Microbryum +, Phascum subg. Microbryum +, Phascum sect. Pottiella +, Phascum subg. Pottiella +, Pottia sect. Pottiella +  and Pottia subg. Pottiella +
Microbryum vlassovii +
Microbryum +
species +
ovate;short elliptical +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
ovate +, elliptical +  and lanceolate +
yellow distally and red +, orange +, red +  and yellow +
rectangular +
stemless +  and perigoniate +
brown;reddish-brown +
plant +  and gregarious +
occasionally smaller than the perichaetiate +
bottle--shaped +