Sphagnum balticum |
Sphagnum macrophyllum |
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Baltic peat-moss, Baltic sphagnum |
largeleaf sphagnum |
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Habit | Plants small to moderate-sized, soft and ± weak-stemmed; brownish green, yellow-green, yellowish to golden brown, capitulum typically flat and 5-radiate. | Plants brown, dark brown to nearly black. |
Stem(s) | leaves 0.8–1.1 mm, triangular-lingulate to lingulate, concave, spreading, apex broadly obtuse, hyaline cells fibrillose in apical region. |
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Branches | slender and tapering, often 5-ranked and decurved, leaves somewhat elongated at distal end. |
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Branch leaves | ovate-lanceolate, 1–1.7 mm, straight, slightly undulate and spreading; margin entire, hyaline cells on convex surface with 1–5 pores in cell ends and free near apex, on concave surface with round wall thinnings in cell ends and angles; chlorophyllous cells triangular in transverse section and well-enclosed on concave surface. |
lanceolate to linear-lanceolate, apex narrow and tubular, hyaline cells with 8–12 moderate-sized (more than 0.25 cell diameter) in mostly one row. |
Sexual condition | dioicous. |
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Spores | 25–33 µm; smooth to finely papillose on both surfaces; proximal laesura approximately 0.5 spore radius. |
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Branch | fascicles with 2 spreading and mostly 1 pendent branch.; branch stem green, cortex enlarged with conspicuous retort cells. |
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Sphagnum balticum |
Sphagnum macrophyllum |
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Habitat | Abundant in hollows and floating mats in raised bogs and poor fens | Floating or stranded at margins of shallow lakes and ponds, rarely in seeps where probably constantly wet |
Elevation | low to high elevations | low to moderate elevations |
Distribution |
AK; CO; AB; BC; MB; NT; NU; ON; QC; YT; Greenland; Eurasia |
AL; AR; DE; FL; GA; LA; MD; MS; NC; NJ; NY; SC; TN; TX; VA; NF; NS
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Discussion | Unlike Sphagnum angustifolium and S. annulatum, S. balticum has stem leaves exerted at right angles to the stem. It also has fewer and weaker hanging branches than does S. angustifolium, which make the stem itself often visible and the stem leaves easier to see. Sphagnum balticum also lacks the paired pendent branch buds between the capitulum rays as seen in S. angustifolium. In Sphagnum kenaiense there are sometimes spreading stem leaves but this species has 2 hanging branches per fascicle. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 27, p. 65. | FNA vol. 27, p. 61. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | S. recurvum subsp. balticum | Isocladus macrophyllus, S. macrophyllum var. burinense |
Name authority | (Russow) C. E. O. Jensen: in Botaniske Forening København, Festskrift, 100. (1890) | Bridel: Bryol. Univ. 1: 10. (1826) |
Web links |