|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Euphorbiaceae||View Description||Dichotomous Key|
|Genus: Ricinus||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Ricinus communis L.
Habit: Shrub, occasionally tree-like, 1--3 m, +- glabrous; sap clear; monoecious. Stem: trunk ascending to erect, branched above. Leaf: cauline, alternate, peltate; stipules fused, 1--1.5 cm, sheath-like, deciduous; petiole 1--3 dm, glandular distally; blade 1--5 dm, +- round, palmately 7--11-lobed, sharply toothed. Inflorescence: panicle, terminal, 1--3 dm; staminate flowers proximal to pistillate flowers. Staminate Flower: sepals 3--5; stamens many, clustered; nectary 0. Pistillate Flower: sepals 3--5; ovary 3-chambered, bristly, styles 2-lobed, plumose, +- red. Fruit: 1.2--2 cm diam, +- spiny. Seed: 9--22 mm, smooth, shiny, mottled; scar appendaged. Chromosomes: 2n=20.
Ecology: Disturbed areas; Elevation: < 300 m. Bioregional Distribution: GV, CCo, SCo, expected elsewhere; Distribution Outside California: eastern United States; native to Europe. Toxicity: Highly TOXIC: seeds attractive to children, fatal when ingested. Flowering Time: All year
eFlora Treatment Author: Mark H. Mayfield & Grady L. Webster
Jepson Online Interchange
Weed listed by Cal-IPC
Previous taxon: Ricinus
Next taxon: Stillingia
Citation for this treatment: Mark H. Mayfield & Grady L. Webster 2016. Ricinus communis, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=41486, accessed on April 29, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on April 29, 2016.