Sphagnum perfoliatum |
Sphagnum brevifolium |
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Habit | Plants moderate-sized, upright but weak-stemmed; golden brown to dark brown; capitulum distinct and often with strongly curved branches. | Plants small and slender to moderate-sized, soft, not very compact; pale yellow, yellowish brown to brown; capitulum flat to somewhat convex, not 5-radiate to somewhat 5-radiate. |
Stem(s) | leaves triangular-lingulate to lingulate; 0.8–1.2 mm; apex rounded and sometimes erose; hyaline cells non-septate or sometimes septate, usually fibrillose in distal 1/2 of leaf, convex surface with very small pores (ca. 2 µm) along commisures and free, concave surface with fewer commissural pores. |
leaves triangular to lingulate-triangular, apex apiculate, acute and sometimes slightly obtuse, spreading or sometimes appressed; hyaline cells nonseptate and often fibrillose at leaf apex. |
Branches | turgid and often strongly curved. |
straight to distinctly curved, leaves unranked to 5-ranked, leaves not greatly elongate at branch distal end. |
Branch leaves | ovate-lanceolate; 1.4 or more mm; mostly subsecund; hyaline cells on convex surface with numerous small (2 µm or more) pores along the commissures and sometimes free, concave surface with no pores or fewer small pores along the commissures. |
ovate to ovate-lanceolate, greater than 1.2 mm, often subsecund, slightly undulate and slightly recurved when dry; margin entire; hyaline cells on convex surface with 1 pore per cell in apical end, on concave surface with round wall thinnings in the cell ends and angles; chlorophyllous cells equilateral to isosceles-triangular, well-enclosed on the concave surface. |
Sexual condition | not known. |
dioicous. |
Capsule | not seen. |
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Spores | not seen. |
not seen. |
Branch | fascicles with 2 spreading and 2 pendent branches. |
fascicles with 2 spreading and 1–2 pendent branches.; branch stems with cortex enlarged with conspicuous retort cells, sometimes reddish at proximal end. |
Sphagnum perfoliatum |
Sphagnum brevifolium |
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Habitat | Low to moderate elevations | Ecology not presently understood due to past confusion with other species |
Elevation | low to moderate elevations | |
Distribution |
AK; NT; Asia |
AK; MD; ME; MI; MN; NH; NY; VT; NF; QC; Europe |
Discussion | For ecology, see discussion under 59. Sphagnum orientale. Sporophytes of Sphagnum perfoliatum are apparently rare. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Details of the distribution of Sphagnum brevifolium are unclear because of confusion with S. fallax and S. isoviitae. This seems to be a species of poor to medium fens, where it occurs in depressions and floating mats; it does not appear to form extensive fast-growing mats as do S. fallax, S. isoviitae, and S. pacificum. Sphagnum brevifolium is one of five species in the S. recurvum complex with apiculate stem leaves. On the Pacific coast it seemingly co-occurs only with S. pacificum, from which it differs in having branch leaves less sharply recurved and more strongly 5-ranked. In eastern North America it is quite uncommon but can occur with both S. fallax and S. isoviitae of S. recurvum, in the broad sense. Sphagnum fallax has more sharply recurved branch leaves. Sphagnum splendens has a distinct shiny look. The much more common S. isoviitae has a distinctly flatter capitulum, narrower branch leaves and wider stem leaves. In fact, the relatively broad branch leaves of S. brevifolium sometimes can give it the appearance of a slender S. pulchrum, but the latter has much more strongly 5-ranked branch leaves and lacks paired pendent branch buds. See also discussion under 22. S. angustifolium. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 27, p. 83. | FNA vol. 27, p. 66. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | S. cuspidatum var. brevifolium | |
Name authority | L. I. Savicz: Bot. Mater. Otd. Sporov. Rast. Bot. Inst. Komarova Akad. Nauk S.S.S.R. 7: 208. (1951) | (Lindberg) J. Röll: Bot. Centralbl. 39: 340. (1889) |
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