|University of California, Berkeley|
|Directory News Site Map Home|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
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 |
Annual, perennial herb from caudices, corms, stolons, rhizomes, or tubers, aquatic (± emergent or on mud); roots fibrous, septate or not; monoecious, dioecious, or flowers bisexual. Stem: caudex short. Leaf: basal, simple, palmately veined, floating or not; submersed generally linear to ovate; emergent linear to sagittate. Inflorescence: generally scapose, umbel-, raceme-, or panicle-like; flowers, branches whorled. Flower: radial; sepals 3, generally green, generally persistent; petals 3, generally > sepals, white or pink; stamens 6–many; pistils 6–many, free or ± fused at base. Fruit: achene, generally compressed, beaked.
± 12 genera, 75–100 species: especially tropics, subtropics. [Haynes & Hellquist 2000 FNANM 22:7–25] —Scientific Editor: Thomas J. Rosatti.
Unabridged references: [Rogers 1983 J Arnold Arbor 64:383–420]
Key to Alismataceae
Perennial herb; roots not septate; flowers bisexual. Leaf: blade linear to ovate, tapered to base or petioled, base tapered to rounded. Inflorescence: peduncle generally smooth. Flower: receptacle ± flat; sepals generally 3.5–6 mm; petals cut, white to pink; stamens 6; pistils 6–15, in 1 whorl, ± fused at base, ovules 1. Fruit: generally ± spreading, laterally compressed, sides generally opaque, abaxially ± rounded, ribbed; beak >= body, generally terminal.
± 5 species: North America, Europe, Australia. (Greek: ancient name)
Unabridged references: [Vuille 1987 Plant Syst Evol 157:63–71]
Previous taxon: Alisma triviale
Next taxon: Damasonium californicum
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Mar 10 2014
Citation for this treatment: [Author of taxon treatment] 2012. Damasonium, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=68364, accessed on Mar 10 2014
Copyright © 2013 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.
| 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
|View elevation by latitude chart|| Data provided by the participants of the Consortium of California Herbaria.
View all CCH records