Sphagnum lindbergii |
Sphagnum subsecundum |
|
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brown-stem peat-moss, Lindberg's sphagnum |
cow-horn peat-moss, sphagnum |
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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 small, slender, often wiry; green, yellow-brown or golden brown; capitulum small with terminal bud absent. |
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 triangular-lingulate, 0.8 mm or less; apex entire or weakly denticulate, hyaline cells sometimes septate, efibrillose and aporose except near apex. |
Branches | strongly 5-ranked and straight. |
often short and blunt. |
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. |
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Sexual condition | monoicous or dioicous. |
dioicous. |
Capsule | exserted, with few pseudostomata. |
|
Spores | 22–34 µm; both surfaces smooth, apparent ridged border on proximal surface; proximal laesura more than 0.5 spore radius. |
30–35 µm; finely papillose on both surfaces, distinct bifurcated Y-mark sculpture on distal surface; proximal laesurae more than 0.5 spore radius. |
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 2–3 spreading and 2–3 pendent branches Branch leaves broadly ovate, subsecund, hyaline cells on convex surface with very numerous small pores (18–40 per cell) in a continuous row along the commissures, concave surface usually aporose. |
Sphagnum lindbergii |
Sphagnum subsecundum |
|
Habitat | Widespread forming carpets in ombrotrophic to weakly minerotrophic boreal mires | Minerotrophic, near the edges of open, poor fens, less commonly found in open medium fens |
Elevation | low to high elevations | low to high elevations |
Distribution |
AK; CO; NH; NY; WA; AB; BC; MB; NF; NS; NT; NU; ON; QC; YT; Greenland; Eurasia |
AK; CA; CO; CT; ID; IL; IN; MA; ME; MI; MN; MT; NH; NJ; NY; OH; OR; PA; RI; VT; WA; WI; WY; AB; BC; MB; NB; NF; NS; NT; ON; QC; YT; Greenland; Eurasia
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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 are rare in Sphagnum subsecundum. This species is often associated with S. angustifolium, S. centrale, S. fimbriatum, S. flexuosum, S. palustre, and S. teres. The most widespread and common species of sect. Subsecunda, it exhibits considerable phenotypic plasticity in size. However, the stem leaves are always quite small in comparison to those of similar species. See also discussions under 52. S. contortum and 55. S. inexspectatum. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 27, p. 70. | FNA vol. 27, p. 84. |
Parent taxa | Sphagnaceae > Sphagnum > sect. Cuspidata | Sphagnaceae > Sphagnum > sect. Subsecunda |
Sibling taxa | ||
Synonyms | S. crispum | |
Name authority | Schimper: Öfvers. Kongl. Vetensk.-Akad. Förh. 14: 126. (1857) | Nees: in J. Sturm et al., Deutschl. Fl. 2(17): species 3. (1819) |
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