Sphagnum centrale

C. E. O. Jensen

Bih. Kongl. Svenska. Vetensk.-Akad. Handl. 21(10): 34. 1896,.

Synonyms: Sphagnum palustre subsp. intermedium Russow Sphagnum subbicolor
Treatment appears in FNA Volume 27. Treatment on page 50. Mentioned on page 49, 51, 53, 80, 84, 85, 92, 94, 97, 98, 101.

Plants moderate-sized to robust, capitulum compact and well rounded in open-grown forms, lax to somewhat compact; green in shade-forms to golden yellow to golden brown in open-grown forms, occasionally with a pinkish tinge; lawns, loose low hummocks to larger, ± firm hummocks. Stems pale-brown to brown, superficial cortical cells with spiral reinforcing fibrils clearly visible, 2 pores or more per cell, comb-fibrils lacking on interior wall. Stem-leaves to 1.2–2.2 × 0.8–1 mm; rarely hemiisophyllous; hyaline cells nonornamented, rarely septate, comb-lamellae absent. Branches tapering, leaves spreading to somewhat imbricate. Branch fascicles with 2 spreading and 1–2 pendent branches. Branch stems with cortical cells nonornamented, no or weak funnel-like projections on the interior end walls, often with large round pores on the superficial walls. Branch leaves broadly ovate, to 1.7 × 1.5 mm; hyaline cells nonornamented, convex surface with elliptic to rarely round pores along the commissures; chlorophyllous cells lenticular to narrowly elliptical in transverse-section, narrowly exposed on both ends, but more so on concave surface, end walls thickened at both ends. Sexual condition dioicous. Capsule with inconspicuous pseudostomata. Spores 23–30 µm; surface finely roughened to smooth; laesura on proximal surface more than 0.5 spore radius.


Phenology: Capsules uncommon, mature late summer.
Habitat: Medium to rich fens, especially prominent in coniferous fens and sedge fens
Elevation: low to high elevations

Distribution

V27 11-distribution-map.gif

Greenland, Alta., B.C., Nfld. and Labr. (Nfld.), N.W.T., N.S., Ont., P.E.I., Que., Sask., Conn., Idaho, Ill., Ind., Iowa, Maine, Mass., Mich., Minn., Mont., N.H., N.J., N.Y., Ohio, Pa., Vt., Wash., Wis., Eurasia

Discussion

Sphagnum centrale is most similar to S. alaskense but seems to have no range overlap with that species and is also considerably more minerotrophic. In the field it lacks the often reddish tinge of S. palustre and is larger than S. affine. See also discussion under 2. S. alaskense and 9. S. papillosum.

Selected References

None.

Lower Taxa

None.
... more about "Sphagnum centrale"
cucullate;rounded +
Cyrus B. McQueen† +  and Richard E. Andrus +
C. E. O. Jensen +
differentiated +
ratio +, length +  and width +
0 cm0 mm <br />0 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
pendent +  and spreading +
1 +  and 2 +
tapering +
slender +
differentiated +
chlorophyllous +  and septate +
strengthened +
enclosed +
nonornamented +
ornamented +
lenticular +  and narrowly elliptical +
enlarged +
fibrillose +
spherical +
2 cm20 mm <br />0.02 m <br /> (?) +
monoicous +, dioicous +  and sexual +
nonornamented +
Greenland +, Alta. +, B.C. +, Nfld. and Labr. (Nfld.) +, N.W.T. +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Conn. +, Idaho +, Ill. +, Ind. +, Iowa +, Maine +, Mass. +, Mich. +, Minn. +, Mont. +, N.H. +, N.J. +, N.Y. +, Ohio +, Pa. +, Vt. +, Wash. +, Wis. +  and Eurasia +
low to high elevations +
dioicous +  and sexual +
unthickened +  and thickened +
isophyllous +, hemiisophyllous +  and anisophyllous +
open-grown +
Medium to rich fens, especially prominent in coniferous fens and sedge fens +
hummocks +
larger +
inconspicuous +  and conspicuous +
Capsules uncommon, mature late summer. +
funnel-like +
Bih. Kongl. Svenska. Vetensk.-Akad. Handl. +
ornamented +
tetrahedral +
hemiisophyllous +
1.2mm;2.2mm +
lingulate;ovate-lingulate +
0.8mm +  and 1mm +
pale-brown;brown +
differentiated +
round +  and elliptic +
finely roughened;smooth +
concave +  and convex +
Sphagnum palustre subsp. intermedium +  and Sphagnum subbicolor +
Sphagnum centrale +
Sphagnum sect. Sphagnum +
species +
swollen +
brown +  and dark-brown +