Orthotrichum striatum

Hedwig

Sp. Musc. Frond., 163. 1801.

Illustrated
Basionym: Weissia striata (Hedwig) P. Gaertner B. Meyer & Scherbius
Synonyms: Dorcadion striatum (Hedwig) Lindberg
Treatment appears in FNA Volume 28. Treatment on page 70. Mentioned on page 47.

Plants 1–6 cm. Stem-leaves loosely erect, flexuose when dry, lanceolate, 3–4 mm; margins apparently revolute to near apex, entire; apex narrowly acute to acuminate; basal laminal cells elongate, walls thick, nodose; distal cells 7–9 µm, 1-stratose, papillae 2 or 3 per cell, simple, small. Specialized asexual reproduction absent. Sexual condition gonioautoicous. Seta 0.8–1.2 mm. Capsule immersed, ovate, widest mid capsule, 1.5–2.3 mm, smooth; stomata superficial; peristome double; prostome absent; exostome teeth 16, separate to base, recurved, acute, densely papillose; endostome segments 16, well developed, usually present when capsule old and dry, thick, stout, of 2 rows of cells, narrower than exostome teeth, erose, yellowish-brown, densely papillose. Calyptra broadly oblong, smooth, moderately hairy, hairs smooth. Spores 17–31 µm.


Habitat: Deciduous trees, on Acer and Alnus trunks in moist woods, conifers
Elevation: low to moderate elevations (10- 1000 m)

Distribution

V28 104-distribution-map.gif

B.C., Alaska, Calif., Idaho, Oreg., Wash., Europe, Asia (India in Kashmir), n Africa

Discussion

Orthotrichum striatum is distinguished from its closest relatives, O. lyellii, O. pycnophyllum, and O. speciosum, by its ovate, smooth capsules, which are immersed even when dry. The exostome of O. striatum consists of 16 recurved teeth, and the endostome of 16 erose segments. In the flora area, O. striatum is restricted to the Pacific Northwest.

Selected References

None.

Lower Taxa

None.

"narrower" is not a number.

... more about "Orthotrichum striatum"
awned +  and apiculate +
narrowly acute;acuminate +
Dale H. Vitt +
Hedwig +
not decurrent +
Weissia striata +
erect +  and ascending +
8-ribbed or 16-ribbed +  and smooth +
constricted +
differentiated +
B.C. +, Alaska +, Calif. +, Idaho +, Oreg. +, Wash. +, Europe +, Asia (India in Kashmir) +  and n Africa +
low to moderate elevations (10- 1000 m) +
linear-lanceolate +
rectangular;elliptic +
connate +
occasional +
Deciduous trees, on Acer and Alnus trunks in moist woods, conifers +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
lanceolate +
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 +
sexual +  and asexual +
2-fid +  and conic +
sometimes larger +
lateral +  and terminal +
Sp. Musc. Frond., +
sinistrorse +, dextrorse +  and erect +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
Illustrated +
papillose +  and smooth +
superficial +
Dorcadion striatum +
Orthotrichum striatum +
Orthotrichum +
species +
specialized +
cladautoicous +, pseudautoicous +, dioicous +  and sexual +
incrassate +
olive brown;reddish-brown;olive brown;reddish-brown;dark green +
large +  and small +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.23 cm2.3 mm <br />0.0023 m <br />) +