Jepson Interchange (more information)
Print edition is available from the University of California Press
|
This page is based on the 1993 Jepson Manual.
Please see the Jepson eFlora for up-to-date information about California vascular plants. |
| Jepson Flora Project: Jepson Interchange |
|
|
TREATMENT FROM THE JEPSON MANUAL |
previous taxon |
next taxon
Jepson Interchange (more information) |
|
©Copyright 1993 by the Regents of the University of California
Print edition is available from the University of California Press |
| The second edition of The Jepson Manual (2012) is available from the University of California Press | |
| See also the Jepson eFlora, which parallels the Second Edition |
Perennial, aquatic; caudex or rhizome generally horizontal, generally large
Leaves alternate, arising directly from caudex; petiole long; blades generally floating, submersed, or slightly emergent
Inflorescence: flowers solitary, axillary; peduncle long
Flowers generally bisexual; sepals 3–many, sometimes petal-like; petals 0–many, sometimes scale- or stamen-like, inserted on receptacle or side of ovary; stamens many, spirally arranged, filaments generally broad; ovary ± compound, superior to inferior, chambers 5–many, ovules many, styles finger-like or 0
Fruit spongy, berry-like
Genera in family: 6 genera, ± 60 species: worldwide.
Rhizomes or tuber prostrate to erect
Leaf: blade generally floating, elliptic to round, generally deeply notched, upper surface glabrous, green, lower surface often red or purplish tinged
Flower generally showy, fragrant; sepals generally 4, < petals, ± green; petals 12–many, white, red, blue, or yellow; stamens many, inserted on elevated part of ovary, outer filaments flat, sometimes petal-like, inner filaments linear; ovary compound, partly inferior, styles many, finger-like, spreading outward from central depression
Seeds enclosed in spongy aril
Species in genus: ± 45 species: tropical, n hemisphere, s Africa, Australia
Etymology: (Greek: water-nymph)
| Introduced |
Rhizome prostrate, not tuber-like
Leaf: blade 5–25 cm wide, ± round
Flower 5–15 cm, floating or ± emergent, very fragrant; sepals, petals lanceolate to ovate; petals generally > 20; outer stamens generally 3–4 mm, anthers of inner stamens 7–12 mm; styles generally 20
Fruit 2.5–3 cm, depressed spheric
Seed ± 2 mm
Chromosomes: 2n=84
Ecology: Quiet waters, ponds, edges of lakes
Elevation: generally < 2700 m.
Bioregional distribution: Widely scattered, High Sierra Nevada (Lake Tahoe), Sacramento Valley (Butte Co.), San Bernardino Mountains, expected elsewhere
Distribution outside California: native to e N.America
Cult widely for ornamental. Weedy.
| 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). |
|