Scheuchzeria palustris |
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American scheuchzeria, marsh scheuchzeria, pod-grass, Rannoch-rush, scheuchzeria, scheuchzérie palustre |
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Habit | Herbs, glabrous. |
Rhizomes | creeping, jointed, freely branching. |
Stems | flexuous, zigzag, 1–4 dm. |
Leaves | striate; cauline leaves gradually reduced to bracts; sheaths 1.5–10 cm, ligules 2–12 mm; hairs within leaf sheath 0.2–2 cm; blade 2–41 cm × 1–3 mm. |
Inflorescences | 3–12-flowered, 3–10 cm; proximal bract foliaceous; distalmost sheaths sometimes bladeless; pedicels spreading, 5–25 mm. |
Flowers | tepals in 2 similar series of 3 each, white to yellow-green, lance-ovate to lanceolate, 1-veined, 2–3 mm, membranous, apex acute; filaments filiform; anthers linear, elongate; pistils 6–7 mm; styles oblong; stigmas papillose. |
Seeds | brown to black, ovoid, 4–5 mm, smooth, hard; endosperm absent. |
Follicles | light green to brown, ovoid, 4–10 mm, leathery, dehiscing on curved, adaxial side; beak 0.5–1 mm. |
2n | = 22. |
Scheuchzeria palustris |
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Phenology | Flowering in late spring. |
Habitat | Sphagnum bogs, marshes, and lake margins |
Elevation | 0–2000 m [0–6600 ft] |
Distribution |
AK; CA; CT; IA; ID; IL; IN; MA; ME; MI; MN; MT; ND; NH; NJ; NY; OH; OR; PA; RI; VT; WA; WI; WV; AB; BC; MB; NB; NL; NS; NT; ON; QC; SK; YT; Eurasia
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Discussion | North American representatives of this species have been regarded as being varietally distinct from Eurasian plants on the basis of follicle and stigma characters (M. L. Fernald 1923). Variability in those characters, in specimens from both hemispheres, vitiates their worth for varietal distinction. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 22. |
Parent taxa | |
Synonyms | S. palustris var. americana, S. palustris subsp. americana, S. americana |
Name authority | Linnaeus: Sp. Pl. 1: 338. (1753) |
Web links |
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