Orthotrichum affine |
Orthotrichum speciosum |
|
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orthotrichum moss, wood bristle-moss |
lanceolateleaf rock moss, showy bristle-moss |
|
Habit | Plants to 3 cm. | Plants 0.8–5 cm. |
Stem | leaves erect-appressed and straight when dry, ligulate, elongate- to ovate-lanceolate, 2–4 mm; margins recurved-revolute to just below apex, entire; apex acute; basal laminal cells long-rectangular to elongate, walls thick, nodose; distal cells 9–13 µm, 1-stratose, papillae 2 or 3 per cell, 2-fid, low. |
leaves loosely erect, usually slightly contorted or curved when dry, lanceolate to narrowly lanceolate, 3–4 mm; margins revolute nearly to apex, entire; apex acuminate to narrowly acute; basal laminal cells elongate, walls thick, nodose or wavy; distal cells 7–13 µm, 1-stratose, papillae 1–3 per cell, conic or 2-fid, large. |
Seta | 1–2.2 mm. |
1–3 mm. |
Sexual condition | gonioautoicous. |
gonioautoicous. |
Capsule | 1/2 emergent to short-exserted, long-cylindric when mature, cylindric and constricted along entire length when old and dry, 1.6–2.5 mm, strongly 8-ribbed 2/3 capsule length; stomata superficial; peristome double; prostome absent; exostome teeth 8, erect when mature, reflexed to reflexed-recurved when old, coarsely and obscurely papillose or sometimes papillose-reticulate, deeply perforate, cancellate; endostome segments 8, rarely 16, well developed, usually present when capsule is old and dry, narrow, of 2 rows of cells, papillose. |
exserted to rarely emergent, cylindric to ovate-cylindric when mature, 1.5–2.4 mm, slightly 8-ribbed to mid capsule; stomata superficial; peristome double; prostome absent; exostome teeth 8, separate to base, recurved, acute, coarsely papillose; endostome segments 8, well developed, usually present when capsule is old and dry, thick, stout, of 2 rows of cells, narrower than exostome teeth, yellowish brown, coarsely papillose. |
Calyptra | conic-oblong, smooth, hairs few, papillose. |
conic-oblong, smooth, hairy, hairs finely papillose. |
Spores | 15–18 µm. |
13–26 µm. |
Specialized | asexual reproduction absent. |
asexual reproduction absent. |
Orthotrichum affine |
Orthotrichum speciosum |
|
Habitat | Deciduous trees, shaded rock, shaded forests near stream beds, canyons, mountains | Coniferous and deciduous trees, rock |
Elevation | low to high elevations (0-3000 m) (low to high elevations (0-9800 ft)) | low to high elevations (10-2000 m) (low to high elevations (0-6600 ft)) |
Distribution |
CA; CO; ID; MT; OR; UT; WA; AB; BC; Europe; Asia; n Africa
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AK; CA; CO; ID; MI; MN; MT; NH; NV; NY; OR; UT; WA; WY; AB; BC; MB; NB; NL; NS; NT; NU; PE; QC; SK; YT; n Asia; Greenland; Europe; n Africa
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Discussion | Orthotrichum affine, a species confined to western North America in the flora area, is best recognized by: superficial stomata; cylindric, strongly ribbed, almost exserted capsules; a well-developed but not stout endostome; and a calyptra that is only sparsely hairy. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Orthotrichum speciosum is primarily western and Arctic in distribution; the plants are distinguished by their ribbed capsules, large size, and more slender leaf apices. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 28, p. 50. | FNA vol. 28, p. 67. |
Parent taxa | Orthotrichaceae > Orthotrichum | Orthotrichaceae > Orthotrichum |
Sibling taxa | ||
Synonyms | O. killiasii, O. speciosum subsp. killiasii, O. speciosum var. killiasii | |
Name authority | Schrader ex Bridel: Muscol. Recent. 2(2): 22. (1801) | Nees: in J. Sturm et al., Deutschl. Fl. 2 (17): 5. (1819) |
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