Sphagnum rubellum |
Sphagnum angermanicum |
|
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sphagnum |
angerman'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, soft and lax, capitulum large with head branches that are typically distinctively blunt and transversely flattened; usually pale green with a weak purplish coloration evident late in the growing season, often with a weak metallic luster 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 lingulate to spatulate, widest above middle (1.5 times as wide as the base), 1.5–2.5 mm, apex obtuse and dentate to lacerate; border entire and little broadened at base, hyaline cells elongated-rhomboid, normally 1-septate, strongly fibrillose in distal portion, convex surface with numerous large pores and resorption gaps in apical angles, concave surface with large resorption gaps below and large resorption pores above. |
Branches | weakly to strongly 5-ranked. |
unranked, terete. |
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, 1.3–2.5 mm, straight, not concave; apex weakly involute, broadly truncate with 6–10 conspicuous teeth; border entire; hyaline cells on convex surface with elliptic pores (4–8 per cell) along the commissures, concave surface with large round pores in distal half and proximal portion of cells. |
Sexual condition | dioicous. |
dioicous. |
Spores | 18–33 µm, coarsely papillose on both surfaces; proximal laesura less than 0.4 spore radius. |
26–34 µm; finely granulose-roughened. |
Branch | fascicles with 2 spreading and 1–2 pendent branches. |
fascicles with 2 spreading and 1–2 pendent branches. |
Sphagnum rubellum |
Sphagnum angermanicum |
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Phenology | Capsules mature mid summer. | |
Habitat | Poor fens and ombrotrophic mires, forming extensive carpets and hummocks | Minerotrophic, hydrophytic |
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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MA; ME; NH; NJ; NY; NB; NF; NS; QC; Europe |
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 of Sphagnum angermanicum are rare. This is a species associated with typically poor fen species such as S. flavicomans, S. bartlettianum, S. papillosum, S. pulchrum, and S. rubellum. It is usually easily recognized by its pale color and blunt, short and flattened capitulum branches, and also is limited to wetter microsites than most species of sect. Acutifolia and rarely forms hummocks. Spore characters are taken from H. A. Crum (1984). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 27, p. 96. | FNA vol. 27, p. 89. |
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. nemoreum var. angermanicum |
Name authority | Wilson: Bryol. Brit., 19. (1855) | Melin: Svensk Bot. Tidskr. 13: 21. (1919) |
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