Macrocoma tenuis

(Hooker & Greville) Vitt

Rev. Bryol. Lichénol. 39: 217. 1973.

Illustrated
Basionym: Orthotrichum tenue Hooker & Greville Edinburgh J. Sci. 1: 120, plate 5 [lower left]. 1824
Treatment appears in FNA Volume 28. Treatment on page 43.

Leaves with basal laminal cells bulging, papillose-mammillose. Seta dextrorse, smooth. Capsule 1.3–2 mm; exothecial cells not or slightly differentiated; peristome consisting of low papillose membrane. Calyptra often splitting by one cleft along one rib.

Distribution

V28 52-distribution-map.gif

se United States, Mexico, West Indies, Central America, South America, Asia, s Africa, Pacific Islands (New Zealand), Australia

Discussion

Subspecies 2 (1 in the flora).

Subspecies tenuis is Old World in distribution.

Selected References

None.

... more about "Macrocoma tenuis"
awned +  and apiculate +
acute;narrowly obtuse +
Dale H. Vitt +
(Hooker & Greville) Vitt +
not decurrent +
Orthotrichum tenue +
elliptic-conic +  and mitrate +
16-ribbed +, 8-ribbed +  and symmetric +
oblong-cylindric;fusiform +
not constricted +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
differentiated +
roundedquadrate +
se United States +, Mexico +, West Indies +, Central America +, South America +, Asia +, s Africa +, Pacific Islands (New Zealand) +  and Australia +
linear-lanceolate +
reflexed +, recurved +  and erect +
rectangular;elliptic +
connate +
occasional +
flexuose +
erect-spreading +
papillose-mammillose +
not rugose +
lanceolate +  and ovatelanceolate +
denticulate +, plane to revolute +  and plane +
rostrate;convex;conic +
mammillose +  and smooth +
2-fid +  and conic +
sometimes larger +
lateral +  and terminal +
Rev. Bryol. Lichénol. +
0.4 cm4 mm <br />0.004 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
Illustrated +
erect-ascending +
superficial +
Macrocoma tenuis +
Macrocoma +
species +
specialized +
cladautoicous +, pseudautoicous +, dioicous +  and sexual +
incrassate +
olive brown;reddish-brown;olive brown;reddish-brown;dark green +