Compilation
Sphagnum teres

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Name

Identification
Sphagnum teres (Schimp.) Ångstr. [family SPHAGNACEAE ] (stored under name); Verified by H.-J. Zündorf (JE), 2012 Isotype of Sphagnum teres (Schimp.) Ångstr. [family SPHAGNACEAE ] Verified by H.-J. Zündorf (JE), 2012
Related name
  • Sphagnum squarrosum
  • Sphagnum teres

Flora

Entry for Sphagnum teres Ångström [family ]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 27,
Names
Sphagnum teres Ångström [family ], in C. J. Hartman, Handb. Skand Fl. ed., 8, 417. 1861,
Sphagnum squarrosum var. teres Schimper [family ], Vers. Entw.-Gesch. Torfm., 64. 1858
Sphagnum teres var. squarrosulum (Schimper) Warnstorf [family ]
Information
Plants fairly slender to moderate-sized, pale green to yellowish, or reddish brown in sun-grown forms; forms loose to dense carpets. Stems pale green to red-brown; 3–4 layers of superficial cells. Stem leaves generally larger than branch leaves, 1.3– 1.8 × 0.8–1 mm; elliptic to lingulate-spatulate, widest above middle, hyaline cells nonseptate. Branches long-cylindrical, branch leaves terete to sometimes distinctly squarrose in shade forms. Branch fascicles typically with 3 spreading (sometimes 2) and 2 pendent branches. Branch stems with single layer of cortical cells. Branch leaves 1–1.4 mm, ovate to ovate-lanceolate, gradually narrowed to an involute tip, hyaline cells somewhat bulging on concave surface and nearly plane on convex surface, with 4–8 large, elliptic, unringed pores per cell on convex surface and 1–4 irregularly rounded pores per cell on concave surface, internal commissural walls smooth to rather strongly papillose, chlorophyllous cells ovate-triangular with the widest part at or close to the convex surface. Sexual condition dioicous. Spores 21–26 µm; proximal and distal surfaces smooth, papillae indistinct; proximal laesura 0.5–0.6 spore radius.
Phenology
Sporophytes uncommon, capsules mature late spring to early summer.
Altitude range
low to high elevations;
Distribution
GreenlandEurasia.USA AlaskaUSA Calif.USA Colo.USA Conn.USA IdahoUSA Ill.USA Ind.USA IowaUSA MaineUSA Mass.USA Mich.USA Minn.USA Mont.USA N.H.USA N.J.USA N.Y.USA N.Dak.USA OhioUSA Oreg.USA Pa.USA Vt.USA Wash.USA Wis.USA Wyo.Canada Alta.Canada B.C.Canada Man.Canada Nfld. and Labr. (Nfld.)Canada N.W.T.Canada N.S.Canada NunavutCanada Ont.Canada Que.Canada Sask.Canada Yukon
Discussion
Shade forms of Sphagnum teres are often squarrose but these are usually considerably smaller than S. squarrosum. For other distinctions between these species, see discussion under the latter.

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