Sphagnum splendens |
Sphagnum imbricatum |
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sphagnum |
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Habit | Plants moderate-sized, pale brown and shiny, capitulum well defined. | Plants moderate-sized, weak-stemmed, lax; yellowish to golden brown; forming loose carpets; branches loosely imbricate. |
Stem(s) | leaves triangular, 0.7–0.9 mm, appressed to stem; apex apiculate; hyaline cells efibrillose and nonseptate. |
leaves short-rectangular, 0.8–1.1 mm, hyaline cells mostly non-septate and absent comb-fibrils. |
Branches | moderately tapering, leaves only moderately larger at branch tips. |
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Branch leaves | ovate-lanceolate, 1–1.4 mm; straight; stiff, not undulate and slightly recurved; margins entire; hyaline cells efibrillose, convex surface with 1 pore 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 well enclosed to just reaching concave surface. |
ovate to ovate-elliptic, 1.4–1.8 mm; hyaline cells on convex surface with numerous pores along the commissures; comb-lamellae obvious only in proximal 1/2 of leaf; chlorophyllous cells broadly triangular in transverse section and well-enclosed on the convex surface. |
Sexual condition | unknown. |
dioecious. |
Spores | unknown. |
(22) 24–27(–28) µm, surface granulate. |
Branch | fascicles with 2 spreading and 2 pendent branches.; branch stems green; cortex enlarged with conspicuous retort cells. |
fascicles with 2 spreading and 1–2 hanging branches.; branch stems with hyaline cells non-ornamented, no or weak funnel-like projections on the end walls of cortical cells, cortical cell walls usually with large round pores. |
Sphagnum splendens |
Sphagnum imbricatum |
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Habitat | Moderate elevations | Ecology poorly known |
Elevation | moderate elevations | |
Distribution |
QC; Known only from the type locality |
AK |
Discussion | Sporophytes of Sphagnum splendens are unknown. The lack of any fibrils in the branch leaf hyaline cells gives it an unusually glossy appearance that should make it readily identifiable in the field. The facts that it differs from S. fallax in only one character and that it is known only from the type locality make S. splendens questionably distinct to some observers. More investigation is needed. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
K. I. Flatberg (1984) considered Sphagnum imbricatum to be East Asian in distribution but a recent collection in Selawik National Wildlife Refuge places it in the North American flora. It will undoubtedly be found elsewhere. Sphagnum imbricatum is closest in morphological detail to S. steerei, but the latter is a very dark colored and densely branched species whereas S. imbricatum is quite light in color and not particularly dense. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 27, p. 76. | FNA vol. 27, p. 52. |
Parent taxa | ||
Sibling taxa | ||
Name authority | Maass: Bryologist 70: 193, figs. 1–4. (1967) | Russow: Beitr. Torfm., 99. (1865) |
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