Sphagnum cribrosum |
Sphagnum kenaiense |
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Habit | Plants green, light brown to brown. | Plants small and weak-stemmed; grows sprawling in lawns; pale brown to golden brown; capitulum flat-topped and only weakly 5-radiate. |
Stem(s) | leaves appressed to stem or somewhat spreading; lingulate, ovate, to triangular; equal to or less than 0.9 mm; apex obtuse and often erose to lacerate. |
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Branches | with leaves unranked to 5-ranked, leaves not much elongated at distal branch tip. |
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Branch leaves | ovate-ligulate, apex broad, rounded, and truncate, hyaline cells with 20–40 small (less than 0.25 cell diameter) in mostly 2 rows. |
ovate, 1.1–1.3 mm long, stiff, weakly undulate and slightly recurved when dry; hyaline cells in mid region quite short and broad, 3.3–2.5:1, in basal 1/2 of leaf on convex surface often with 1 large pore apically and/or up to 6 free pores, in apical region often with pseudopores along the cell margins; on concave surface with large round wall-thinnings in the cell ends and angles (these sometimes faint or absent); chlorophyllose cells triangular in transverse section and typically well-enclosed on concave surface. |
Branch | fascicles with 2 spreading and 2–3 pendent branches. |
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Sexuality | unknown. |
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Sphagnum cribrosum |
Sphagnum kenaiense |
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Habitat | Floating or stranded at margins of shallow acidic lakes and ponds | Lawns and hollows, typically in sedgey weakly minerotrophic fens |
Elevation | low elevations | low to moderate elevations |
Distribution |
FL; GA; MD; NC; SC |
AK |
Discussion | Besides having different branch leaf porosity, Sphagnum cribrosum is usually distinguishable from the closely related S. macrophyllum by its paler brown color and distinctly broader and more truncate branch leaves. “Wave forms” of both S. cribrosum and S. macrophyllum, seemingly developed in response to growing in shallow water where wave action is common, can have very odd phenotypes that may look more like Fontinalis than Sphagnum. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 27, p. 61. | FNA vol. 27, p. 69. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | S. floridanum, S. macrophyllum var. floridanum | |
Name authority | Lindberg: Eur. Hvitmoss., 74. (1882) | R. E. Andrus: Sida 22: 961, figs. 7–13. (2006) |
Web links |