Jepson Flora Project: Jepson Interchange    

link to manual TREATMENT FROM THE JEPSON MANUAL (1993) previous taxon | next taxon
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.



Robert F. Thorne

Perennial, glabrous, submersed marine aquatic, rhizomed, monoecious or dioecious
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.



Dioecious; rhizomes < 12 cm, thick, tuber-like
Stem 10–60 cm, slender to thick, flat and winged below
Leaves tufted at rhizome nodes, < 100(200) cm, 0.5–4 mm wide
Staminate inflorescence enclosed by membranous, leaf-like bract; flowers each enclosed by translucent, scale-like bractlets
Pistillate inflorescence enclosed by membranous, leaf-like bract; flowers alternating with vestigial anthers, each enclosed by translucent, scale-like bractlet
Staminate flower: anther sessile
Pistillate flower: ovary tapered to short style, style base persistent in fruit
Fruit: nutlet, 2–3 mm, beaked, base with 2 downward projecting, horn-like lobes
Species in genus: 5 species: n Pacific coast; surf zones and rocky shores, just below low tide level
Etymology: (Greek: leaf-like inflorescence)

previous taxon | next taxon
bioregional map for PHYLLOSPADIX being generated
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Phyllospadix
Retrieve dichotomous key for Phyllospadix
Overlay Consortium of California Herbaria specimen data by county on this map
Show other taxa with the same California distribution | Read about bioregions | Get lists of plants in a bioregion
Return to the Jepson Interchange main page
Return to treatment index page
  • This page is no longer being maintained.

University & Jepson Herbaria Home Page |
General Information | University Herbarium | Jepson Herbarium |
Visiting the Herbaria | On-line Resources | Research |
Education | Related Sites
Copyright © by the Regents of the University of California