Sphagnum fimbriatum |
Sphagnum jensenii |
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fringe bogmoss, fringe peat-moss, sphagnum |
jensen's sphagnum |
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Habit | Plants typically small and slender, larger and compact in the Arctic, capitulum small to moderate-sized, often with a conspicuous terminal bud; green, yellowish brown to brown; without metallic lustre when dry. | Plants moderate-sized to robust, weak-stemmed; pale brown to chestnut brown; capitulum flat-topped and generally 5-radiate, branches straight to somewhat curved, terminal bud often visible. | ||||
Stem(s) | leaves spatulate to broad-spatulate, 0.8–1.5(–2) mm, strongly lacerate across the broad apex and often part way down the margins, border scarcely to strongly broadened at base (0.25 width of base or less); hyaline cells rhomboid, efibrillose and often 1–2-septate. |
leaves triangular, ovate-triangular to triangular-lingulate, 1–1.3 mm; appressed to spreading; apex obtuse, hyaline cells usually fibrillose near apex. |
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Branches | not 5-ranked, quite terete, long, and slender Branch fascicles with 1– 2 spreading and 1–2 pendent branches. |
straight to somewhat curved, leaves moderately elongate at distal end. |
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Branch leaves | ovate to ovate-lanceolate; 1.1–1.5(–2) mm, slightly concave, straight; apex involute; margins entire; hyaline cells on convex surface with numerous pores along the commissures grading from small pores near leaf apex to large pores at base, concave surface with large round pores at leaf apex and along margins. |
ovate-lanceolate; usually more than 2 mm; straight; weakly undulate and slightly recurved when dry, margins entire; hyaline cells on convex surface with numerous small free pores in proximal 2/3 of leaf and in apical region with numerous pseudopores along commissures, on concave surface with numerous round free pores; cells relatively long and narrow in basal region, much longer than in mid region; chlorophyllous cells triangular in transverse section and well-enclosed on concave surface. |
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Sexual condition | often monoicous. |
dioicous. |
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Spores | 20–27 µm, finely papillose on both surfaces; proximal laesura less than 0.5 spore radius. |
29–33 µm; both surfaces very smooth; proximal laesura long, more than 0.6 spore radius. |
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Branch | fascicles with 2 spreading and 1–2 pendent branches.; branch stems green, cortex enlarged with conspicuous retort cells. |
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Sphagnum fimbriatum |
Sphagnum jensenii |
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Habitat | Predominantly in wet carpets in poor to medium fen habitats, mostly in mire-wide vegetation | |||||
Elevation | low to moderate elevations | |||||
Distribution |
North America; South America; Eurasia; Pacific Islands (New Zealand)
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AK; AB; BC; NF; NT; ON; QC; SK; YT; Eurasia |
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Discussion | Subspecies 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Sporophytes of Sphagnum jensenii are uncommon. For more information, see discussion under 23. S. annulatum. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 27, p. 92. | FNA vol. 27, p. 69. | ||||
Parent taxa | Sphagnaceae > Sphagnum > sect. Acutifolia | Sphagnaceae > Sphagnum > sect. Cuspidata | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | S. annulatum var. porosum | |||||
Name authority | Wilson & Hooker: in J. D. Hooker, Fl. Antarct., 398. (1847) | H. Lindberg: Acta Soc. Fauna Fl. Fenn. 18(3): 13. (1899) | ||||
Web links |