|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL (1993)||
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora.
Perennial, glabrous, submersed marine aquatic, rhizomed, monoecious or dioeciousRetrieve key for ZOSTERACEAE
Stem flat, leafy, creeping or short with wide, thick base
Leaves alternate, 2-ranked or tufted; sheath open or closed; ligule present; blade long, linear, ribbon-like, tip entire to notched
Inflorescence: spike, axillary, flattened, enclosed by membranous, leaf-like bract; flowers many, 2-rowed on 1 side of axis, each enclosed by translucent, scale-like bractlets or not
Staminate flower: perianth 0; stamen 1, anther 2-chambered; pollen thread-like, < 2 mm
Pistillate flower: perianth 0; ovary 1, chamber 1, ovule 1, style 1, stigmas 2
Fruit: drupe or nutlet
Genera in family: 3 genera, ± 18 species: seacoasts, worldwide except tropical; some species source of food for marine animals, some aboriginal humans.