Sphagnum palustre |
Sphagnum angermanicum |
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blunt-leaf bogmoss, blunt-leaf peat-moss, prairie sphagnum |
angerman's sphagnum |
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Habit | Plants moderate-sized to robust, strong-stemmed, lax to somewhat compact, capitulum somewhat flattened to more typically compact and rounded; green to golden brown to pale brown with often a pinkish tinge; carpets to more or less compact, low to moderate sized hummocks. | 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 to 1.7 × 1 mm, occasionally longer; rarely hemiisophyllous; hyaline cells non-ornamented, nonseptate. |
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 | long and tapering, leaves ± imbricate to spreading in shade forms. |
unranked, terete. |
Branch leaves | broadly ovate, 2.2 × 1.3 mm, hyaline cells non-ornamented, convex surface with elliptic pores along the commissures, chlorophyllous cells isosceles-triangular to ovate-triangular in transverse section and just enclosed to just exposed on the convex surface; end wall not thickened. |
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. |
Capsule | with numerous pseudostomata. |
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Spores | 24–33 µm, surface finely papillose to smooth, distal surface with distinct bifurcated Y-mark sculpture; proximal laesura more than 0.6 spore radius. |
26–34 µm; finely granulose-roughened. |
Branch | fascicles with 2 spreading and 2 pendent branches.; branch stems with hyaline cells non-ornamented; no or weak funnel-like projections on the interior end walls, often with 1 large pore per cell on superficial cell walls. |
fascicles with 2 spreading and 1–2 pendent branches. |
Sphagnum palustre |
Sphagnum angermanicum |
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Phenology | Capsules mature mid to late summer. | |
Habitat | Widespread in forested fens and poor to rich sedge fens | Minerotrophic, hydrophytic |
Elevation | low to moderate elevations | low to moderate elevations |
Distribution |
AL; AR; CA; CT; DE; FL; GA; IA; IL; IN; KY; LA; MA; MD; ME; MI; MN; MO; MS; NC; NH; NJ; NY; OH; OK; OR; PA; SC; TN; TX; VA; VT; WA; WI; WV; BC; NB; NF; NS; ON; PE; QC; Europe; Pacific Islands
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MA; ME; NH; NJ; NY; NB; NF; NS; QC; Europe |
Discussion | Sphagnum palustre may occur elsewhere than listed above, but the taxonomy is unclear. In some open-grown situations, it may have a reddish tinge and seem similar to S. magellanicum, but this is a pinkish red color rather than the purplish red of the latter. See discussions under 5. S. henryense and 9. S. papillosum for distinction from those species. (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. 53. | FNA vol. 27, p. 89. |
Parent taxa | Sphagnaceae > Sphagnum > sect. Sphagnum | Sphagnaceae > Sphagnum > sect. Acutifolia |
Sibling taxa | ||
Synonyms | S. cymbifolium | S. nemoreum var. angermanicum |
Name authority | Linnaeus: Sp. Pl. 2: 1106. (1753) | Melin: Svensk Bot. Tidskr. 13: 21. (1919) |
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