Sphagnum rubellum |
Sphagnum flavicomans |
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sphagnum |
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 normally robust, sometimes moderate-sized, stiff and erect, capitulum large and typically hemispherical, usually deep reddish brown, frequently with a faint metallic purplish 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. |
leaves narrowly triangular-lingulate, 1.5–2 mm, apex right-angled to apiculate, border moderately strong and greatly broadened at the base (more than 0.25 width); hyaline cells rhombic, 0–1-septate, normally fibrillose near apex. |
Branches | weakly to strongly 5-ranked. |
not 5-ranked, terete, long and tapering. |
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, 1.5–2.3 mm, straight, concave, apex strongly involute; margins entire; hyaline cells on convex surface with elliptic pores along the commissures, grading from moderate-sized pores near leaf apex to large pores at leaf base, concave surface with large round pores in proximal marginal regions of leaf. |
Sexual condition | dioicous. |
dioicous. |
Spores | 18–33 µm, coarsely papillose on both surfaces; proximal laesura less than 0.4 spore radius. |
27–32 µm, finely papillose on both surfaces; proximal laesura less than 0.5 spore radius. |
Branch | fascicles with 2 spreading and 1–2 pendent branches. |
fascicles with 2 spreading and 1–2 pendent branches. |
Sphagnum rubellum |
Sphagnum flavicomans |
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Phenology | Capsules mature mid summer. | Capsules mature early to mid summer. |
Habitat | Poor fens and ombrotrophic mires, forming extensive carpets and hummocks | Ombrotrophic to weakly minerotrophic and hygrophytic, forming hummocks on margins of ponds and in poor fens where some shade is available and carpets in wet forests along coast |
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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CT; DE; MA; MD; ME; NC; NH; NJ; NY; PA; RI; VA; NB; NF; NS; PE; QC |
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.) |
The sporophytes of Sphagnum flavicomans are uncommon. It is associated with S. cuspidatum, S. papillosum, S. rubellum, S. pulchrum, and S. torreyanum. This species is the ecological replacement for S. fuscum in much of the Atlantic coastal plain; compared to that species, S. flavicomans is substantially more robust and has a larger stem leaf with a more pointed apex. See also discussion under 83. S. subfulvum. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 27, p. 96. | FNA vol. 27, p. 93. |
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 | S. acutifolium var. flavicomans, S. plumulosum var. flavicomans, S. subnitens var. flavicomans, S. subnitens var. obscurum, S. subnitens var. viride |
Name authority | Wilson: Bryol. Brit., 19. (1855) | (Cardot) Warnstorf: in H. G. A. Engler, Pflanzenr. 51[III]: 79. (1911) |
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