Sphagnum rubellum |
Sphagnum torreyanum |
|
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sphagnum |
Torrey'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 robust and weak-stemmed; green to golden yellow; capitulum ± rounded in emergent forms, flat in submersed forms; lacking distinct 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 triangular, 1–1.7 mm, apex acute to slightly obtuse; leaves usually appressed; margins entire; hyaline cells fibrillose and usually septate at base and sides. |
Branches | weakly to strongly 5-ranked. |
unranked, long and tapering, leaves greatly elongated at distal end. |
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 to lanceolate, 3–5.5 mm; straight but sometimes slightly falcate-secund; weakly undulate and recurved when dry; margins entire; hyaline cells on convex surface with 0–1 pore per cell, on concave surface with round wall thinnings on the apices and angles; chlorophyllous cells narrowly triangular in transverse section and just enclosed on the concave surface. |
Sexual condition | dioicous. |
dioicous. |
Spores | 18–33 µm, coarsely papillose on both surfaces; proximal laesura less than 0.4 spore radius. |
26–29 µm; both surfaces distinctly papillose, appearing pusticulate to irregularly pusticulate; proximal laesura mostly less than 0.5 spore radius. |
Branch | fascicles with 2 spreading and 1–2 pendent branches. |
fascicles with 2 spreading and 2 pendent branches.; branch stems green; cortex enlarged with conspicuous retort cells. |
Sphagnum rubellum |
Sphagnum torreyanum |
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Phenology | Capsules mature mid summer. | |
Habitat | Poor fens and ombrotrophic mires, forming extensive carpets and hummocks | Forming wet often floating carpets in weakly minerotrophic mires |
Elevation | low to high elevations | low to moderate 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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AL; CT; DE; FL; GA; LA; MA; MD; ME; MS; NC; NH; NJ; NY; PA; RI; SC; VA; VT; NB; NF; NS; QC; St Pierre and Miquelon (Miquelon) |
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 in Sphagnum torreyanum. See discussion under 24. S. atlanticum for taxonomic distinctions. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 27, p. 96. | FNA vol. 27, p. 77. |
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 | S. cuspidatum var. torreyi, S. cuspidatum var. miquelonense, S. kearneyi, S. laxifolium var. miquelonense |
Name authority | Wilson: Bryol. Brit., 19. (1855) | Sullivant: Mem. Amer. Acad. Arts, n. s. 4: 174. (1849) |
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