Directory       News       Site Map       Home
         
    Jepson eFlora: Taxon page
Key to families | Table of families and genera

Previous taxon Indexes to all accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Previous taxon

ZOSTERACEAE EEL-GRASS FAMILY

Robert F. Thorne, Robert R. Haynes, C. Barre Hellquist & Gordon Leppig

Perennial herb (annual), submersed marine aquatic, rhizomed, glabrous; monoecious or dioecious. Stem: flat, leafy, creeping or short with wide, thick base. Leaf: alternate, 2-ranked or tufted, < 2 m; sheath open or closed; blade linear, ribbon-like, tip entire to notched; stipules 0. Inflorescence: axillary or terminal spike, of limited distribution on plant, ± flat, enclosed by membranous, leaf-like bract in flower, also in fruit or not; flowers many, 2-rowed on 1 side of axis, each embedded in axis, enclosed by translucent, scale-like bract or not; peduncle not elongating. Staminate flower: perianth 0; stamen 1, anther generally sessile, 2-chambered; pollen thread-like, < 2 mm. Pistillate flower: perianth 0; ovary 1, chamber 1, ovule 1, style 1, stigmas 2. Fruit: ± achene.
3 genera, ± 18 species: seacoasts, worldwide; some species, especially Zostera marina, source of food for marine animals, some aboriginal humans. [Haynes 2000 FNANM 22:90–94] —Scientific Editor: Thomas J. Rosatti.

Key to Zosteraceae

PHYLLOSPADIX SURF-GRASS
Rhizomes < 12 cm. Stem: 10–60 cm, slender to thick, below flat, winged. Leaf: 0.2–1 m, 0.5–6 mm wide. Inflorescence: enclosed by subtending, membranous, sheathing, leaf-like bract in youth, exserted from it in age; flowers each enclosed by translucent, scale-like bract; pistillate flowers alternate flowers with vestigial anthers. Pistillate flower: ovary tapered to short style.
5 species: northern Pacific coasts. (Greek: leaf-like inflorescence) Island distributions of California species need study.

Key to Phyllospadix

P. scouleri Hook.
NATIVE
Pistillate flower: bract not narrowed at base. Fruit: ± 3.5 mm.
Surf zones, rocky shores, intertidal, subtidal; 0–2 m below mean low tide. North Coast, Central Coast, South Coast, Channel Islands; to Alaska, Baja California. Apr–Jul [Online Interchange]

Previous taxon: Phyllospadix
Next taxon: Phyllospadix torreyi

Contact/Feedback

Name search

Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Nov 22 2014
Citation for this treatment: [Author of taxon treatment] 2013. Phyllospadix, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=37989, accessed on Nov 22 2014

Copyright © 2014 Regents of the University of California
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.


Geographic subdivisions indicated for the distribution of Phyllospadix scouleri Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
READ ABOUT YELLOW FLAGS
map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

View elevation by latitude chart
Data provided by the participants of the Consortium of California Herbaria.
View all CCH records

 

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.