Sphagnum teres |
Sphagnum warnstorfii |
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rigid peat-moss, sphagnum |
Warnstorf's peat-moss, Warnstorf's sphagnum |
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Habit | Plants fairly slender to moderate-sized, pale green to yellowish, or reddish brown in sun-grown forms; forms loose to dense carpets. | Plants small or less frequently moderate-sized, slender, capitulum flat-topped and stellate; green or dark purplish red and green, rarely green throughout, often with a distinctive bluish cast when dry. |
Stem(s) | leaves generally larger than branch leaves, 1.3– 1.8 × 0.8–1 mm; elliptic to lingulate-spatulate, widest above middle, hyaline cells nonseptate. |
leaves triangular-lingulate to lingulate, 1.1–1.4 mm, apex broad-rounded to narrowly truncate, border very broad at base (more than 0.3 width); hyaline cells efibrillose, rhombic, mostly 1-septate but can be non-septate. |
Branches | long-cylindrical, branch leaves terete to sometimes distinctly squarrose in shade forms. |
long and tapering, usually strongly 5-ranked. |
Branch leaves | 1–1.4 mm, ovate to ovate-lanceolate, gradually narrowed to an involute tip, hyaline cells somewhat bulging on concave surface and nearly plane on convex surface, with 4–8 large, elliptic, unringed pores per cell on convex surface and 1–4 irregularly rounded pores per cell on concave surface, internal commissural walls smooth to rather strongly papillose, chlorophyllous cells ovate-triangular with the widest part at or close to the convex surface. |
ovate-lanceolate, 0.9–1.4 mm, concave, straight, apex involute; hyaline cells on convex surface with very small ringed pores (less than 0.25 cell width) along commissures near apex, changing abruptly to large elliptical pores (0.4 cell width or more) basally, concave surface with large round pores in proximal margins and leaf base. |
Sexual condition | dioicous. |
dioicous. |
Spores | 21–26 µm; proximal and distal surfaces smooth, papillae indistinct; proximal laesura 0.5–0.6 spore radius. |
17–26 µm, finely papillose on both surfaces; proximal laesura less than 0.5 spore radius. |
Branch | fascicles typically with 3 spreading (sometimes 2) and 2 pendent branches.; branch stems with single layer of cortical cells. |
fascicles with 2 spreading and 1–2 pendent branches. |
Sphagnum teres |
Sphagnum warnstorfii |
|
Phenology | Sporophytes uncommon, capsules mature late spring to early summer. | Capsules mature late summer to early autumn. |
Habitat | Strongly minerotrophic, in open to medium rich fens, less frequent in coniferous mires, characteristic species of rich, weakly acidic to slightly basic mires | Minerotropic, hygrophytic, frequent in medium to rich fens |
Elevation | low to high elevations | low to moderate elevations |
Distribution |
AK; CA; CO; CT; IA; ID; IL; IN; MA; ME; MI; MN; MT; ND; NH; NJ; NY; OH; OR; PA; VT; WA; WI; WY; AB; BC; MB; NF; NS; NT; NU; ON; QC; SK; YT; Greenland; Eurasia
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AK; CO; CT; IA; ID; IN; MA; MD; ME; MI; MN; MT; NC; NH; NJ; NY; OH; PA; RI; SD; UT; VT; WA; WI; WY; AB; BC; MB; NB; NF; NS; NT; NU; ON; QC; SK; YT; Greenland; Eurasia
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Discussion | Shade forms of Sphagnum teres are often squarrose but these are usually considerably smaller than S. squarrosum. For other distinctions between these species, see discussion under the latter. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Sporophytes are uncommon in Sphagnum warnstorfii. This is one of the most minerotrophic species of the flora, is hygrophytic, and has a very broad niche. The most commonly associated vascular plants are Thuja occidentalis, Abies balsamea, and Picea rubens. Bryophytes typically associated with it are S. centrale, S. squarrosum, S. teres, Calliergonella cuspidata, and Campylium stellatum. This species is perhaps most similar to S. bartlettianum, with which it has small range overlap. Sphagnum warnstorfii has a shorter and less sharply pointed stem leaf and the red color with a characteristic bluish caste compared to the crimson red of S. bartlettianum. See also discussion under 81. S. russowii and 86. S. talbotianum. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 27, p. 59. | FNA vol. 27, p. 101. |
Parent taxa | Sphagnaceae > Sphagnum > sect. Squarrosa | Sphagnaceae > Sphagnum > sect. Acutifolia |
Sibling taxa | ||
Synonyms | S. squarrosum var. teres, S. teres var. squarrosulum | S. warnstorfianum |
Name authority | Ångström: in C. J. Hartman, Handb. Skand Fl. ed. 8, 417. (1861) | Russow: Sitzungs.-Ber. Naturf.-Ges. Univ. Dorpat 8: 315. (1888) |
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