Sphagnum lindbergii |
Sphagnum angermanicum |
|
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brown-stem peat-moss, Lindberg's sphagnum |
angerman's sphagnum |
|
Habit | Plants moderate-sized to large, moderately densely branched; green to brown, often bluish tinged and/or shiny when dry; capitulum flattopped with a conspicuous terminal bud. | 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-spatulate, large, 1.3–1.6 mm; appressed to stem; apex very broad and lacerate; hyaline cells efibrillose and aporose, often 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 | strongly 5-ranked and straight. |
unranked, terete. |
Branch leaves | ovate-lanceolate, 1.5–3 mm; straight to slightly subsecund; imbricate to somewhat reflexed and not undulate; margins entire; hyaline cells long and narrow, length to width ca. 10:1 on convex surface with 1 or more small pores in the cell ends and angles and often with numerous pseudopores along the margins, on concave surface with large round wall thinnings on the cell ends and angles; chlorophyllous cells triangular to trapezoidal in transverse section, apex often exposed on concave surface. |
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 | monoicous or dioicous. |
dioicous. |
Spores | 22–34 µm; both surfaces smooth, apparent ridged border on proximal surface; proximal laesura more than 0.5 spore radius. |
26–34 µm; finely granulose-roughened. |
Branch | fascicles with 2 spreading and 2 pendent branches, leaves not much elongated at distal end.; branch stems green, with cortex enlarged with retort cells. |
fascicles with 2 spreading and 1–2 pendent branches. |
Sphagnum lindbergii |
Sphagnum angermanicum |
|
Habitat | Widespread forming carpets in ombrotrophic to weakly minerotrophic boreal mires | Minerotrophic, hydrophytic |
Elevation | low to high elevations | low to moderate elevations |
Distribution |
AK; CO; NH; NY; WA; AB; BC; MB; NF; NS; NT; NU; ON; QC; YT; Greenland; Eurasia |
MA; ME; NH; NJ; NY; NB; NF; NS; QC; Europe |
Discussion | Sporophytes are uncommon. Sphagnum lindbergii is normally easily distinguished from other carpet-forming species of sect. Cuspidata by its large, strongly lacerate stem leaf and dark brown to black stem. Sexual condition is taken from from L. I. Savicz-Lubitzkaya and Z. N. Smirnova (1968). (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. 70. | FNA vol. 27, p. 89. |
Parent taxa | Sphagnaceae > Sphagnum > sect. Cuspidata | Sphagnaceae > Sphagnum > sect. Acutifolia |
Sibling taxa | ||
Synonyms | S. nemoreum var. angermanicum | |
Name authority | Schimper: Öfvers. Kongl. Vetensk.-Akad. Förh. 14: 126. (1857) | Melin: Svensk Bot. Tidskr. 13: 21. (1919) |
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