|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, submersed, emergent, floating, or on wet ground. Leaf: simple, alternate or whorled, ± in basal rosette or not; blade linear (especially underwater) to round, sometimes sagittate or cordate, base generally sheathing, veins parallel; petiole inflated or not. Inflorescence: raceme, spike, panicle, or 1-flowered, terminal but often appearing ± axillary, subtended by sheathing bract. Flower: bisexual, radial or ± bilateral; perianth lobes 6 (in 2 series) [3,4], petal-like; stamens 3, 6 (in 2 series) [1,4], from various levels on perianth tube, equal or not, sometimes 3 sterile, modified; ovary superior, 1 or 3-chambered. Fruit: many-seeded, loculicidal capsule [1-seeded utricle]. Seed: < 1 cm, longitudinally ribbed [or not].
± 6 genera, 30 species: most pantropical, some temperate. [Horn 2003 FNANM 26:22–45] Some cultivated as orns, some weeds, especially in rice fields. Pontederia cordata L. <Noxious weed> establishes from garden waste. —Scientific Editor: Thomas J. Rosatti.
Unabridged references: [Eckenwalder, J.E. and S.C.H. Barrett. 1986. Phylogenetic systematics of Pontederiaceae. Syst. Bot. 11: 373–391.]
Key to Pontederiaceae
Annual [perennial herb], generally emergent. Stem: ± erect, stout [elongate]. Leaf: in basal rosettes; blade ovate to narrowly lanceolate; petiole not inflated, generally > blade. Inflorescence: raceme, reflexed after flower. Flower: ± radial; perianth bell-shaped to rotate, tube < 1 cm, parts 6, nearly free; stamens 6, 1 generally > others; ovary 3-chambered.
6 species: tropical Africa, Asia, northeastern Australia. (Greek: 1 apart, from 1 stamen > others)
Stem: > 12 cm. Leaf: blade 2.5–11 cm; petiole 4–70 cm. Inflorescence: > 5 cm, few-flowered. Flower: generally opening under water; perianth blue, parts < 2 cm.
Uncommon. Rice fields; > 100 m. Sacramento Valley; native to tropical Australia, Asia. Sep [Online Interchange]
Previous taxon: Monochoria
Next taxon: Potamogetonaceae
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Sep 4 2015
Citation for this treatment: [Author of taxon treatment] 2013. Monochoria, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=33961, accessed on Sep 4 2015
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.
See CalPhotos for additional images
© 2001 CDFA
|Geographic subdivisions indicated for the distribution of Monochoria vaginalis|| 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
(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