Sphagnum compactum |
Sphagnum fimbriatum |
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compact peat-moss, low sphagnum |
fringe bogmoss, fringe peat-moss, sphagnum |
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Habit | Plants moderate to large-sized, dense and compact, pale green, brownish white, golden brown to variegated golden brown, can be reddish in rocky seep habitats; forms small, tufted compact cushions. | Plants typically small and slender, larger and compact in the Arctic, capitulum small to moderate-sized, often with a conspicuous terminal bud; green, yellowish brown to brown; without metallic lustre when dry. | ||||
Stem(s) | leaves small, 0.3–0.7 mm, triangular-lingulate with broad rounded apex, Branches short, crowded, and unranked. |
leaves spatulate to broad-spatulate, 0.8–1.5(–2) mm, strongly lacerate across the broad apex and often part way down the margins, border scarcely to strongly broadened at base (0.25 width of base or less); hyaline cells rhomboid, efibrillose and often 1–2-septate. |
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Branches | not 5-ranked, quite terete, long, and slender Branch fascicles with 1– 2 spreading and 1–2 pendent branches. |
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Branch leaves | large, 1.4–3 mm, semi-squarrose to squarrose, ovate and abruptly involute in distal portion, appearing cucullate with toothed apex, usually no more than 6 teeth; hyaline cells with 5 or more ringed, round to elliptical pores on convex surface, numerous pseudopores on concave surface with 3-ringed corner pores occurring in 3s at adjacent cell angles; chlorophyllous cells elliptic in transverse section, entirely included by hyaline cells, slightly nearer to convex surface. |
ovate to ovate-lanceolate; 1.1–1.5(–2) mm, slightly concave, straight; apex involute; margins entire; hyaline cells on convex surface with numerous pores along the commissures grading from small pores near leaf apex to large pores at base, concave surface with large round pores at leaf apex and along margins. |
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Sexual condition | monoicous. |
often monoicous. |
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Capsule | with abundant pseudostomata. |
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Spores | 25–35 µm; finely papillose on proximal surface, coarsely papillose on distal surface with raised Y-mark sculpture; proximal laesura short, 0.3–0.5 spore radius. |
20–27 µm, finely papillose on both surfaces; proximal laesura less than 0.5 spore radius. |
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Branch | fascicles 4–6 branches per fascicle, 2–3 spreading and 2–3 pendent, but plants frequently unbranched in young clones. |
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Sphagnum compactum |
Sphagnum fimbriatum |
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Phenology | Capsules fairly common, mature summer. | |||||
Habitat | Ombrotrophic to weakly minerotrophic, commonly growing on poorly drained sand, siliceous rocks, bare peat | |||||
Elevation | low to high elevations | |||||
Distribution |
AK; AR; CA; CT; FL; GA; IA; IL; IN; KY; LA; MA; MD; ME; MI; MN; MO; MS; MT; NC; NH; NJ; NY; OH; OR; PA; SC; TN; VA; VT; WA; WI; WV; AB; BC; MB; NB; NF; NS; NT; ON; PE; QC; SK; YT; South America; Greenland; Eurasia; Pacific Islands (New Zealand)
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North America; South America; Eurasia; Pacific Islands (New Zealand)
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Discussion | Sphagnum compactum is usually easily recognized by its combination of golden brown color and involute, cucullate branch leaves. Sphagnum strictum is paler and usually strongly squarrose. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Subspecies 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 27, p. 56. | FNA vol. 27, p. 92. | ||||
Parent taxa | Sphagnaceae > Sphagnum > sect. Rigida | Sphagnaceae > Sphagnum > sect. Acutifolia | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | S. compactum var. imbricatum, S. rigidum | |||||
Name authority | Lamarck & de Candolle: Fl. Franç. ed. 3, 2: 443. (1805) | Wilson & Hooker: in J. D. Hooker, Fl. Antarct., 398. (1847) | ||||
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