Sphagnum fimbriatum |
Sphagnum mirum |
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fringe bogmoss, fringe peat-moss, 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 fairly slender to moderate-sized, green; forming low dense hummocks. | ||||
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 generally longer than branch leaves, 1.1–1.7 mm, lingulate to lingulate-spathulate, hyaline cells mostly non-septate. |
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Branches | not 5-ranked, quite terete, long, and slender Branch fascicles with 1– 2 spreading and 1–2 pendent branches. |
terete. |
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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. |
1–1.4 mm, broadly ovate, with a narrow involute tip; hyaline cells only slightly bulging on either surface, in proximal half of leaf aporose on convex surface and with large faint pores on concave surface; internal commissural walls distinctly papillose; chlorophyllous cells elliptical to elliptical-triangular in transverse section, enclosed on both surfaces with the widest part in the leaf middle. |
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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. |
ca. 31 µm, ornamented by small somewhat amalgamated granulae. |
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Branch | fascicles of 2 spreading and 1–2 hanging branches.; branch stems with 1–2 layers of cortical cells. |
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Sphagnum fimbriatum |
Sphagnum mirum |
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Phenology | Sporophytes abundant, capsules mature August. | |||||
Habitat | Ecology poorly known but probably quite minerotrophic | |||||
Elevation | low elevations | |||||
Distribution |
North America; South America; Eurasia; Pacific Islands (New Zealand)
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AK |
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Discussion | Subspecies 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Sphagnum mirum has only been recently discovered and so far is known only from its type locality, where it was growing in a fen mixed with S. teres. (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. 58. | ||||
Parent taxa | Sphagnaceae > Sphagnum > sect. Acutifolia | Sphagnaceae > Sphagnum > sect. Squarrosa | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Name authority | Wilson & Hooker: in J. D. Hooker, Fl. Antarct., 398. (1847) | Flatberg & Thingsgaard: Bryologist 106: 501. (2003) | ||||
Web links |