Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

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SCHEUCHZERIACEAE

SCHEUCHZERIA FAMILY

Robert F. Thorne

Perennial from rhizomes, aquatic (generally emergent) or terrestrial (sometimes on floating mats)
Stem erect, generally simple, slender
Leaves basal and cauline, alternate, simple; sheath generally open; ligule prominent; blade erect, linear, subcylindric; tip with a large pore
Inflorescence: raceme, terminal, bracted
Flower bisexual, radial; perianth parts 6 in 2 whorls, free; stamens 6 in 2 whorls, free, anthers opening outward by slits; pistils 3(6), simple above, fused at base, ovary superior, chamber 1, ovules 1–3
Fruit: follicle
Genera in family: 1 genus, 1 sp.

SCHEUCHZERIA


Etymology: (Johann Jakob Scheuchzer, Swiss botanist, 1672–1733)

Native

S. palustris L. subsp. americana (Fernald) Hultén

AMERICAN SCHEUCHZERIA


Stem in flower 3–4 dm
Leaves: basal 1–2(3) dm; cauline shorter upward; ligule 2–10 mm; blade 1–3 mm wide
Inflorescence: flowers 3–12; peduncle in fruit < 2.5 dm
Flower: perianth parts ± 3 mm, 1-veined, greenish
Fruit: follicles 2–3, 5–10 mm, ± ascending
Seeds 1–3, 4–5 mm
Chromosomes: n=11
Ecology: Floating mats, bogs, lake margins
Elevation: 1400–2000 m.
Bioregional distribution: s High Cascade Range
Distribution outside California: to Alaska, e N.America
Other subsp. in Eurasia.

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