Sphagnum lenense

Pohle

Trudy Glavn. Bot. Sada 33: 14. 1915,.

Basionym: Sphagnum lindbergii var. microphyllum Warnstorf Hedwigia 32: 16. 1893
Treatment appears in FNA Volume 27. Treatment on page 70. Mentioned on page 62.

Plants compact, short-branched and small; strongly reddish to golden brown, glossy when dry; flattopped capitulum with moderately differentiated terminal bud. Stems dark-brown; superficial cortex of 3–4 layers of enlarged thin-walled cells. Stem-leaves lingulate,small, equal to or less than 0.8 mm, appressed to stem; apex with strong lacerate split in the middle; hyaline cells efibrillose, aporose, and nonseptate. Branches strongly 5-ranked, short and blunt, not much elongated at distal end. Branch fascicles with 2 spreading and 2–3 pendent branches. Branch stems green, with cortex enlarged with retort cells. Branch leaves ovate; usually less than 1.5 mm; stiff and slightly reflexed, straight to slightly subsecund; margins entire; hyaline cells moderately long and narrow (6–8:1), convex surface with one small round pore per cell at apex and numerous pseudopores on the margin, concave surface with large round wall-thinnings in the cell angles and ends; chlorophyllous cells triangular in transverse-section, with apex reaching concave surface. Sexual condition unknown. Spores not seen.


Habitat: Common forming hummocks and carpets in a variety of weakly minerotrophic to ombrotrophic mires including Eriophorum tussock fens, dwarf shrub fens, polygon peatlands, string mires and raised bogs
Elevation: low to moderate elevations

Distribution

Greenland, Nfld. and Labr. (Nfld.), N.W.T., Nunavut, Que., Yukon, Alaska, Eurasia

Discussion

Sporophytes are rare in Sphagnum lenense. This species is easily distinguished from the similar S. lindbergii by its compact growth form and reddish brown color. Sphagnum lenense also is a hummock former in the tundra whereas S. lindbergii forms carpets.

Selected References

None.

Lower Taxa

None.

"elongated" is not a number.

... more about "Sphagnum lenense"
Cyrus B. McQueen† +  and Richard E. Andrus +
Sphagnum lindbergii var. microphyllum +
differentiated +
broad +  and narrow +
fascicles +  and 5-ranked +
more slender and delicate +
ratio +, length +  and width +
0 cm0 mm <br />0 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
pendent +  and spreading +
2 +  and 3 +
slender +
differentiated +
chlorophyllous +, efibrillose +  and thin-walled +
alternating +
strengthened +
nonornamented +
6 (?) +  and 8 (?) +
triangular +
enlarged +
fibrillose +
spherical +
0 cm0 mm <br />0 m <br /> (?) +  and 0.2 cm2 mm <br />0.002 m <br /> (?) +
monoicous +, dioicous +  and sexual +
enlarged +
Greenland +, Nfld. and Labr. (Nfld.) +, N.W.T. +, Nunavut +, Que. +, Yukon +, Alaska +  and Eurasia +
low to moderate elevations +
monoicous +, dioicous +  and sexual +
conspicuous +
isophyllous +, hemiisophyllous +  and anisophyllous +
Common forming hummocks and carpets in a variety of weakly minerotrophic to ombrotrophic mires including Eriophorum tussock fens, dwarf shrub fens, polygon peatlands, string mires and raised bogs +
0 cm0 mm <br />0 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
inconspicuous +  and conspicuous +
few +  and numerous +
Trudy Glavn. Bot. Sada +
lacerate +
tetrahedral +
septate +, porose +  and efibrillose +
triangular;lingulate +
usually smaller +
dark-brown +
differentiated +
with a few to numerous pores or pseudopores +  and porose +
concave +  and convex +
Sphagnum sect. Mollusca +
Sphagnum lenense +
Sphagnum sect. Cuspidata +
species +
swollen +
strongly reddish +  and golden brown +