Sphagnum rubellum |
Sphagnum aongstroemii |
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sphagnum |
aongstroem'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. | |
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. |
green. |
Branches | weakly to strongly 5-ranked. |
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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. |
very concave, truncate and toothed. |
Sexual condition | dioicous. |
|
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. |
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Sphagnum rubellum |
Sphagnum aongstroemii |
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Phenology | Capsules mature mid summer. | |
Habitat | Poor fens and ombrotrophic mires, forming extensive carpets and hummocks | Wet rock faces and in moist depressions, usually in open among scattered shrubs and sedges in relatively minerotrophic sites |
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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AK; BC; NT; NU; YT; 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.) |
Sphagnum aongstroemii can usually be easily recognized by its combination of pale green color and truncate, toothed branch leaves. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 27, p. 96. | FNA vol. 27, p. 57. |
Parent taxa | Sphagnaceae > Sphagnum > sect. Acutifolia | Sphagnaceae > Sphagnum > sect. Insulosa |
Sibling taxa | ||
Synonyms | S. acutifolium var. tenellum, S. capillaceum var. tenellum, S. capillifolium var. tenellum | S. cymbifolium var. cordifolium |
Name authority | Wilson: Bryol. Brit., 19. (1855) | C. Hartman: Handb. Skand. Fl. ed. 7, 399. (1858) |
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