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FNA | Family List | FNA Vol. 27 | Sphagnaceae | Sphagnum

82. Sphagnum sitchense R. E. Andrus, Sida. 22: 969, figs. 27-34. 2006.

Plants moderate-sized; capitulum flat-topped and dense; pale yellow and pink, lacking sheen. Stem pink, superficial cortical cells aporose. Stem leaves narrowly triangular to lingulate- triangular, 1.2-1.6 × 0.6-0.8 mm, length: width ratio ca. 2:1, apex apiculate, border strong and moderately broadened basally; hyaline cells narrowly rhomboid and 1 to occasionally 2 septate, often fibrillose apically. Branches not 5-ranked. Branch fascicles with 2 spreading and 1 pendent branch. Branch leaves 1.3-1.5 × 0.5-0.55 mm, ovate-lanceolate, concave, straight, apex involute; hyaline cells on convex surface with numerous round to elliptic pores along the commissures, grading from large elliptical pores at the base to moderate-sized round pores at the apex, concave surface with a few large round pores scattered throughout. Sexual condition unknown.

Known only from type locality where it was forming low dense hummocks in alpine tundra; moderate elevations; Alaska.


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