Jepson Flora Project: Jepson Interchange    

link to manual TREATMENT FROM THE JEPSON MANUAL (1993) previous taxon | next taxon
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

  • Up-to-date information about California vascular plants is available from the Jepson eFlora.



James R. Shevock

Perennial, shrubs, trees, very aromatic, sometimes thorny
Leaves generally alternate, simple to pinnately compound (sometimes reduced to spines), prominently oil-gland-dotted; stipules 0
Inflorescence: cyme, raceme, or flowers solitary, generally bracted
Flower generally bisexual, generally strongly aromatic; sepals generally 5, free or fused at base, generally persistent; petals generally 5, free or fused at base, generally whitish or greenish; stamens generally 2–4 X petal number; ovary generally superior, generally lobed, chambers generally 4–5, ovules generally many
Fruit: berry, drupe, winged achene, or capsule, generally aromatic
Seeds generally oily
Genera in family: ± 150 genera, ± 1500 species: especially tropical, warm temp, especially s Africa, Australia; used or cultivated for food (Citrus , 50 species), perfume, medicine, timber, ornamental (Choisya, Skimmia , etc.). Some TOXIC: oils may promote localized sunburn or produce dermatitis.


Perennial, subshrub
Leaves pinnately or ternately compound
Inflorescence: panicle or cluster, erect, terminal
Flower: petals 4–5, wavy to fringed; stamens 8 or 10 in 2 series; ovary chambers 4–5
Fruit: capsule, 4–5 lobed at top, sometimes indehiscent
Seeds several, angled
Species in genus: 7 species: nw Africa islands, Medit, sw Asia
Etymology: (Latin: the classical name)
Cult for ornamental, flavoring, medicine.


R. chalepensis L.

Plant glaucous, puberulent
Stem 4–8 dm
Leaf 2–3-pinnate, generally 10–20 cm, oblong in outline; segments generally 1–1.5 cm, narrowly elliptic, entire
Flower: petals 6–8 mm, yellow, margins inrolled, fringed
Fruit: lobes pointed
Ecology: Uncommon. Disturbed places
Elevation: generally < 500 m.
Bioregional distribution: California Floristic Province (especially near coast)
Distribution outside California: native to Mediterranean
R. graveolens L. may also be naturalized (leaf ovate in outline; petal margin wavy, not fringed).

previous taxon | next taxon
bioregional map for RUTA%20chalepensis being generated

Retrieve Jepson Interchange Index to Plant Names entry for Ruta chalepensis
Retrieve dichotomous key for Ruta
Overlay Consortium of California Herbaria specimen data by county on this map
Show other taxa with the same California distribution | Read about bioregions | Get lists of plants in a bioregion
Return to the Jepson Interchange main page
Return to treatment index page

University & Jepson Herbaria Home Page |
General Information | University Herbarium | Jepson Herbarium |
Visiting the Herbaria | On-line Resources | Research |
Education | Related Sites
Copyright © by the Regents of the University of California