Jepson eFlora: Taxon page
Key to families | Table of families and genera
Previous taxon Index to 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 |
Next taxon
Zostera
EEL-GRASS

Higher Taxonomy
Family: ZosteraceaeView DescriptionDichotomous Key

Common Name: EEL-GRASS FAMILY
Habit: 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 pl, +- 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.
Genera In Family: 3 genera, +- 18 species: seacoasts, worldwide; some species, especially Zostera marina, source of food for marine animals, some aboriginal humans.
eFlora Treatment Author: Robert F. Thorne, Robert R. Haynes, C. Barre Hellquist & Gordon Leppig
Scientific Editor: Thomas J. Rosatti.

Zostera
Stem: < 3 m. Leaf: 0.5--1.5(2) m, (0.5)1--18.5 mm wide. Inflorescence: enclosed by subtending, membranous, sheath-like leaf base; staminate, pistillate flowers alternate. Pistillate Flower: ovary tapered to short style.
Species In Genus: 12 species: marine waters worldwide. Etymology: (Greek: from ribbon-like leaves) Note: Important food source for marine animals, some aboriginal humans; Zostera asiatica Miki reported for California (Coyer et al., Dean et al.), possibly naturalized, but may not be distinct from Zostera marina.
eFlora Treatment Author: Robert F. Thorne, Robert R. Haynes, C. Barre Hellquist & Gordon Leppig
Jepson Online Interchange
Key to Zostera

Previous taxon: Phyllospadix torreyi
Next taxon: Zostera japonica

Name Search

Contact/Feedback

Citation for this treatment: Robert F. Thorne, Robert R. Haynes, C. Barre Hellquist & Gordon Leppig 2016. Zostera, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=9712, accessed on May 27, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 27, 2016.