Sphagnum beothuk |
Sphagnum flexuosum |
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sphagnum |
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Habit | Plants small to moderate-sized; capitulum rounded and dense; dark brown with a purplish sheen. | Plants small to moderate-sized, slender and soft, lax, moderately weak to moderately stiff-stemmed; green, pale yellowish green, yellowish brown, grayish brown or reddish brown; capitulum typically compact and twisted in the middle like a ball of yarn, spreading branches curved giving a pinwheel appearance. |
Stem(s) | brown, superficial cortical cells aporose.; stem leaves lingulate, 1.1–1.2 mm, apex slightly apiculate to mostly broad and erose to lacerate, border only slightly broadened at base; hyaline cells rhomboid and 0–1-septate. |
leaves triangular-lingulate to lingulate, 0.7–1.3 mm, appressed to stem, apex obtuse to broadly obtuse and erose to somewhat lacerate, hyaline cells efibrillose and nonseptate. |
Branches | more or less 5-ranked. |
curved, unranked to less commonly (in wet-grown forms) 5-ranked, leaves not much elongate at distal end. |
Branch leaves | 0.95–1.3 mm, ovate to ovate-lanceolate, concave, straight to slightly subsecund, apex involute; hyaline cells on convex surface with numerous surface with numerous round to elliptic pores along the commissures, grading from large pores at the base to a mixture of small and tiny (2 µm) at the apex, concave surface with a few large, round pores/cell in lower side regions. |
ovate-lanceolate to broadly ovate-lanceolate, 1.5–2.5 mm, strongly undulate and moderately recurved when dry, straight; margin entire; greater than hyaline cells on convex surface with 1–2 pores per cell at cell apex, on concave surface with round wall thinnings in the cell ends and angles; chlorophyllous cells triangular in transverse section and typically just slightly exposed on the concave surface. |
Sexual condition | unknown. |
dioicous. |
Spores | 23–25 µm; moderately to coarsely papillose on both surfaces; proximal laesura approximately 0.5 spore radius. |
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Branch | fascicles with 2 spreading and 1 pendent branch. |
fascicles with 2(–3) spreading and 2 pendent branches.; branch stems green but sometimes reddish at proximal end, with cortex enlarged with conspicuous retort cells. |
Sphagnum beothuk |
Sphagnum flexuosum |
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Phenology | Sporophytes uncommon, capsules mature early to late summer. | |
Habitat | Forming dense hummocks in minerotrophic peatlands | Forming carpets in poor to medium fens, mostly sedge-fens and mire edge habitat |
Elevation | moderate elevations | low to moderate elevations |
Distribution |
NF |
CT; IL; IN; MD; ME; MI; MN; NC; NH; NJ; NY; OH; PA; TN; VT; WI; WV; NB; NF; NS; ON; PE; QC; Europe
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Discussion | Of species in sect. Cuspidata with range and ecology similar to that of Sphagnum flexuosum, S. angustifolium and S. recurvum have rounded stem leaves. In S. angustifolium the stem leaves are more triangular and rarely erose while the branch leaves are narrower and more strongly 5-ranked. Sphagnum recurvum also has narrower and more 5-ranked branch leaves than does S. flexuosum, as well as a much more strongly differentiated stem cortex. In S. flexuosum the branch leaves are only slightly recurved whereas in S. recurvum they are sharply recurved. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 27, p. 90. | FNA vol. 27, p. 68. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | S. amblyphyllum, S. fallax var. flexuosum, S. flexuosum var. ramosissimum, S. flexuosum var. recurvum, S. recurvum subsp. amblyphyllum, S. recurvum var. amblyphyllum | |
Name authority | R. E. Andrus: Sida 22: 966, figs. 21–26. (2006) | Dozy & Molkenboer: in R. B. van den Bosch et al., Prodr. Fl. Bat. 2(1): 76. (1851) |
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