Orthotrichum flowersii

Vitt

Bryologist 74: 159, figs. 1 – 8. 1971.

Treatment appears in FNA Volume 28. Treatment on page 55. Mentioned on page 49, 60.

Plants to 0.5 cm. Stem-leaves stiff, erect-appressed when dry, ovate-oblong to oblong-ligulate, 2–2.8 mm; margins revolute, entire or rough near apex by means of projecting papillae; apex rounded-obtuse, often mucronate, carinate; basal laminal cells rectangular to short-rectangular, walls thin, not nodose; distal cells 13–19 µm, 1-stratose, papillae 2 per cell, conic, small. Specialized asexual reproduction by gemmae on leaves. Sexual condition autoicous. Seta 0.5 mm. Capsule immersed or short-emergent, ovate-oblong to oblong when mature, 1–1.4 mm, strongly 8-ribbed 1/2–3/4 capsule length when dry, constricted below mouth when dry; stomata immersed, to 1/2 covered by subsidiary-cells, cells not projecting, inner walls not much thickened; peristome double; prostome absent; exostome teeth 8, reflexed, densely papillose or papillose-striate distally; endostome segments 8, not well developed, usually of 1 row of cells, finely roughened. Calyptra oblong, smooth, naked or hairs few, smooth. Spores 10–17 µm.


Habitat: Base of trees, trunks of deciduous trees, xeric and exposed habitats
Elevation: moderate to high elevations (500- 2000 m)

Distribution

V28 70-distribution-map.gif

Calif., Idaho, Nev., Utah, Europe

Discussion

Orthotrichum flowersii is distinguished from O. pallens and O. pumilum by its blunt, carinate leaves that are ovate or ovate-oblong, almost always with a small mucro. The leaf apices are subcucullate; the stomata are found in one or two rows mid capsule.

Selected References

None.

Lower Taxa

None.

"constricted" is not a number.

... more about "Orthotrichum flowersii"
awned +  and apiculate +
carinate;mucronate;rounded-obtuse +
Dale H. Vitt +
not decurrent +
erect +  and ascending +
8-ribbed or 16-ribbed +  and smooth +
short-emergent +
1/2 +  and 3/4 +
ovate-oblong;oblong +
constricted +
0.1 cm1 mm <br />0.001 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
not projecting +
differentiated +
Calif. +, Idaho +, Nev. +, Utah +  and Europe +
moderate to high elevations (500- 2000 m) +
linear-lanceolate +
papillose-striate +  and papillose +
rectangular;elliptic +
connate +
occasional +
Base of trees, trunks of deciduous trees, xeric and exposed habitats +
oblong-ligulate +
0.2 cm2 mm <br />0.002 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
ovate-oblong +
straight +
spreading +  and widespreading +
not rugose +
linear-lanceolate +, lanceolate +, oblong +  and ovate +
denticulate +  and entire +
dioicous +, cladautoicous +  and sexual +
rostrate;convex;conic +
mammillose +  and smooth +
autoicous +  and sexual +
sometimes larger +
lateral +  and terminal +
sinistrorse +, dextrorse +  and erect +
0.5 cm5 mm <br />0.005 m <br /> (?) +
papillose +  and smooth +
superficial +
0 +  and 1/2 +
Orthotrichum flowersii +
Orthotrichum +
species +
specialized +
cladautoicous +, pseudautoicous +, dioicous +  and sexual +
not nodose +
incrassate +
olive brown;reddish-brown;olive brown;reddish-brown;dark green +
large +  and small +