Sphagnum rubellum |
Sphagnum lindbergii |
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sphagnum |
brown-stem peat-moss, Lindberg's sphagnum |
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Habit | Plants small to moderate-sized, slender, fairly stiff but soft, capitulum flat-topped and stellate; deep maroon-red to variegated red and yellowish green, lacking metallic sheen when dry. | Plants moderate-sized to large, moderately densely branched; green to brown, often bluish tinged and/or shiny when dry; capitulum flattopped with a conspicuous terminal bud. |
Stem(s) | leaves lingulate-triangular to lingulate, 1–1.4 mm, apex broadly rounded but becoming acute in hemiisophyllous forms, border strongly developed at base (more than 0.25 width); hyaline cells rhombic and 0–3-septate with some cells in leaf midregion 2–septate. |
leaves lingulate-spatulate, large, 1.3–1.6 mm; appressed to stem; apex very broad and lacerate; hyaline cells efibrillose and aporose, often septate. |
Branches | weakly to strongly 5-ranked. |
strongly 5-ranked and straight. |
Branch leaves | ovate to ovate-lanceolate, 0.9–1.2 mm, concave, subsecund on some branches, apex involute; hyaline cells on convex surface with numerous round to elliptic pores along the commissures, grading from small round pores near apex to round pores near base, on concave surface with large round pores in proximal portions of leaf. |
ovate-lanceolate, 1.5–3 mm; straight to slightly subsecund; imbricate to somewhat reflexed and not undulate; margins entire; hyaline cells long and narrow, length to width ca. 10:1 on convex surface with 1 or more small pores in the cell ends and angles and often with numerous pseudopores along the margins, on concave surface with large round wall thinnings on the cell ends and angles; chlorophyllous cells triangular to trapezoidal in transverse section, apex often exposed on concave surface. |
Sexual condition | dioicous. |
monoicous or dioicous. |
Spores | 18–33 µm, coarsely papillose on both surfaces; proximal laesura less than 0.4 spore radius. |
22–34 µm; both surfaces smooth, apparent ridged border on proximal surface; proximal laesura more than 0.5 spore radius. |
Branch | fascicles with 2 spreading and 1–2 pendent branches. |
fascicles with 2 spreading and 2 pendent branches, leaves not much elongated at distal end.; branch stems green, with cortex enlarged with retort cells. |
Sphagnum rubellum |
Sphagnum lindbergii |
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Phenology | Capsules mature mid summer. | |
Habitat | Poor fens and ombrotrophic mires, forming extensive carpets and hummocks | Widespread forming carpets in ombrotrophic to weakly minerotrophic boreal mires |
Elevation | low to high elevations | low to high elevations |
Distribution |
AK; CT; IL; IN; MA; MD; ME; MI; MN; NC; NH; NJ; NY; OH; OR; PA; RI; VT; WA; WI; BC; NB; NF; NS; NT; ON; PE; QC; YT; Greenland; Eurasia
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AK; CO; NH; NY; WA; AB; BC; MB; NF; NS; NT; NU; ON; QC; YT; Greenland; Eurasia |
Discussion | Sporophytes are uncommon in Sphagnum rubellum. This common species is associated with S. angustifolium, S. capillifolium, S. fallax, S. fuscum, S. magellanicum, S. papillosum, S. recurvum, and S. tenellum. Inland, it has a greater tendency to form extensive carpets and floating mats than hummocks. See also discussion under 65. S. andersonianum, 68. S. bartlettianum, and 86. S. talbotianum. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Sporophytes are uncommon. Sphagnum lindbergii is normally easily distinguished from other carpet-forming species of sect. Cuspidata by its large, strongly lacerate stem leaf and dark brown to black stem. Sexual condition is taken from from L. I. Savicz-Lubitzkaya and Z. N. Smirnova (1968). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 27, p. 96. | FNA vol. 27, p. 70. |
Parent taxa | Sphagnaceae > Sphagnum > sect. Acutifolia | Sphagnaceae > Sphagnum > sect. Cuspidata |
Sibling taxa | ||
Synonyms | S. acutifolium var. tenellum, S. capillaceum var. tenellum, S. capillifolium var. tenellum | |
Name authority | Wilson: Bryol. Brit., 19. (1855) | Schimper: Öfvers. Kongl. Vetensk.-Akad. Förh. 14: 126. (1857) |
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