Orthotrichum rupestre |
Orthotrichum pulchellum |
|
---|---|---|
orthotrichum moss, rock bristle-moss |
elegant bristle-moss, orthotrichum moss |
|
Habit | Plants (1–)3–12.5 cm, light green to olive green. | Plants to 1.6 cm. |
Stem | leaves stiff, erect-appressed when dry, narrowly lanceolate to ovate-lanceolate, 2–4.5 mm; margins recurved to narrowly revolute to near apex, entire; apex sharply to slenderly acute; basal laminal cells elongate to rectangular, walls thick, ± nodose; distal cells 6–13 µm, 1-stratose, papillae 1 or 2 per cell, conic and small, or 2-fid and low. |
leaves crisped-flexuose when dry, narrowly lanceolate to linear-lanceolate, 1.6–3.2 mm; margins recurved to near apex, entire; apex sharply acute; basal laminal cells rectangular, walls thick, not nodose; distal cells 8–14 µm, 1-stratose, papillae 1–2 per cell, conic, small. |
Seta | to 1.8 mm. |
(0.8–)1–3(–3.5) mm. |
Sexual condition | gonioautoicous. |
gonioautoicous. |
Capsule | immersed, emergent, or slightly exserted, usually 1/3 emergent, globose ovate, ovate-oblong, or short-oblong, 1.3–1.8 mm, slightly or distinctly 8-ribbed 1/2–2/3 length; stomata superficial; peristome single, rarely double; prostome large, conspicuous, or rudimentary; exostome teeth 16, erect or sometimes spreading-recurved when old, smooth, scattered-papillose, or coarsely papillose-granulate; endostome segments absent, or rarely 8, rudimentary, of 1 row of cells, smooth or roughened. |
exserted or sometimes 1/2 emergent, oblong-cylindric, 0.9–2.1 mm, strongly 8-ribbed entire length; stomata immersed, in mid and distal capsule; peristome double; prostome absent; exostome teeth 16, rarely connate in 8 pairs, erect when mature, reflexed when old, irregularly papillose-reticulate; endostome segments 16, well developed, of 1 row of cells, finely roughened. |
Calyptra | oblong, smooth, hairy or rarely naked, hairs finely papillose. |
oblong-conic to conic, smooth, naked. |
Spores | 13–21 µm. |
12–24 µm. |
Specialized | asexual reproduction absent. |
asexual reproduction absent. |
Orthotrichum rupestre |
Orthotrichum pulchellum |
|
Habitat | Non-calcareous boulders and cliff faces in mesic areas of pine, spruce-fir, or aspen forests, base of trees, subalpine shade | Trunks, branches, twigs of deciduous and coniferous trees |
Elevation | low to high elevations (100-3000 m) (low to high elevations (300-9800 ft)) | low to moderate elevations (0-1000 m) (low to moderate elevations (0-3300 ft)) |
Distribution |
AK; AZ; CA; CO; ID; MT; NM; NV; OR; SD; UT; WA; WY; AB; BC; NT; NU; ON; YT; South America; e Africa; Pacific Islands (New Zealand); Atlantic Islands (Canary Islands); Greenland; n Africa; e Asia (Japan); Europe; Australia
|
AK; CA; ID; OR; WA; BC |
Discussion | In typical form, Orthotrichum rupestre is characterized as much-branched plants in loose tufts with lanceolate leaves, apex narrowly and bluntly acute, basal cells elongate, thick-walled, and nodose, yellowish in older leaves, capsule oblong, emergent, 8-ribbed to mid capsule when old and dry, smooth or slightly 8-ribbed when mature, exostome of 16 erect teeth, coarsely papillose, and calyptra with abundant, spinulose, papillose hairs, some of which extend over the beak. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Orthotrichum pulchellum is distinguished from all species of Ulota by its glabrous calyptrae and immersed stomata, and from O. consimile by the 16 reddish exostome teeth that are papillose-reticulate with slender, high papillae, and stomata always located at or beyond mid capsule. Also, plants of O. pulchellum are rarely longer than 1 cm, and capsules are usually barely exserted and oblong-cylindric. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 28, p. 65. | FNA vol. 28, p. 63. |
Parent taxa | Orthotrichaceae > Orthotrichum | Orthotrichaceae > Orthotrichum |
Sibling taxa | ||
Synonyms | Dorcadion rupestre, O. bullatum, O. californicum, O. douglasii, O. macfaddenae, O. rupestre var. globosum, O. rupestre var. macfaddenae, O. texanum, O. texanum var. globosum | O. pulchellum var. groutii |
Name authority | Schleicher ex Schwagrichen: Sp. Musc. Frond. Suppl. 1(2): 27, plate 53 [top]. (1816) | Brunton: in J. E. Smith et al., Engl. Bot. 25: plate 1787. (1807) |
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