Sphagnum rubellum |
Sphagnum sitchense |
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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; capitulum flat-topped and dense; pale yellow and pink, lacking sheen. |
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. |
pink, superficial cortical cells aporose.; stem leaves narrowly triangular to lingulate- triangular, 1.2–1.6 × 0.6–0.8 mm, length: width ratio ca. 2:1, apex apiculate, border strong and moderately broadened basally; hyaline cells narrowly rhomboid and 1 to occasionally 2 septate, often fibrillose apically. |
Branches | weakly to strongly 5-ranked. |
not 5-ranked. |
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. |
1.3–1.5 × 0.5–0.55 mm, ovate-lanceolate, concave, straight, apex involute; hyaline cells on convex surface with numerous round to elliptic pores along the commissures, grading from large elliptical pores at the base to moderate-sized round pores at the apex, concave surface with a few large round pores scattered throughout. |
Sexual condition | dioicous. |
unknown. |
Spores | 18–33 µm, coarsely papillose on both surfaces; proximal laesura less than 0.4 spore radius. |
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Branch | fascicles with 2 spreading and 1–2 pendent branches. |
fascicles with 2 spreading and 1 pendent branch. |
Sphagnum rubellum |
Sphagnum sitchense |
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Phenology | Capsules mature mid summer. | |
Habitat | Poor fens and ombrotrophic mires, forming extensive carpets and hummocks | Known only from type locality where it was forming low dense hummocks in alpine tundra |
Elevation | low to high elevations | 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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AK |
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.) |
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Source | FNA vol. 27, p. 96. | FNA vol. 27, p. 98. |
Parent taxa | Sphagnaceae > Sphagnum > sect. Acutifolia | Sphagnaceae > Sphagnum > sect. Acutifolia |
Sibling taxa | ||
Synonyms | S. acutifolium var. tenellum, S. capillaceum var. tenellum, S. capillifolium var. tenellum | |
Name authority | Wilson: Bryol. Brit., 19. (1855) | R. E. Andrus: Sida 22: 969, figs. 27–34. (2006) |
Web links |