Sphagnum junghuhnianum |
Sphagnum sitchense |
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junghuhn's sphagnum |
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Habit | Plants moderate-sized, soft, loosely tufted, slender, capitulum flat-topped to rounded; pale, dirty green, yellowish to brownish; without metallic lustre when dry. | Plants moderate-sized; capitulum flat-topped and dense; pale yellow and pink, lacking sheen. |
Stem(s) | leaves triangular-lingulate, 1.2–1.6 mm, broadly apex acute to narrowly truncate and toothed, border narrow or indistinct at base (less than 0.25 the width); hyaline cells rhomboid, mostly 0–1-septate; convex surface with membrane pleats, concave surface with 1–3 rounded membrane gaps occupying most of cell. |
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 | somewhat 5-ranked. |
not 5-ranked. |
Branch leaves | ovate-lanceolate, 1.3–2 mm, strongly concave, apex strongly involute; margins entire to somewhat toothed near apex, hyaline cells on convex surface with numerous ringed elliptic pores (6–10) along commissures, concave surface mostly aporose except near margins; Sexual condition dioicous or monoicous. |
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. |
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Spores | 21–23 µm; minutely papillose. |
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Branch | fascicles with 2 spreading and 1–2 pendent branches. |
fascicles with 2 spreading and 1 pendent branch. |
Sphagnum junghuhnianum |
Sphagnum sitchense |
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Habitat | Shady, seepy cliffs | Known only from type locality where it was forming low dense hummocks in alpine tundra |
Elevation | low elevations | moderate elevations |
Distribution |
BC; e Asia |
AK |
Discussion | Sphagnum junghuhnianum in the flora area is known only from the Queen Charlotte Islands. Sporophytes of Sphagnum junghuhnianum were not seen. Three other large, brown species of sect. Acutifolia have stem leaves without fimbriate to lacerate apices, S. subnitens (forms without red color), S. subfulvum, and S. flavicomans. Sphagnum flavicomans has a more pointed stem leaf and a darker brown color as well as a strongly different ecology and range. Both S. subnitens and S. subfulvum have a glossy sheen when dry that is lacking in S. junghuhnianum. Sexual condition and spore characters were taken from H. A. Crum (1984). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 27, p. 95. | FNA vol. 27, p. 98. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | S. junghuhnianum subsp. pseudomolle, S. pseudomolle | |
Name authority | Dozy & Molkenboer: Verh. Kon. Akad. Wetensch., Afd. Natuurk. 2: 8. (1854) | R. E. Andrus: Sida 22: 969, figs. 27–34. (2006) |
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