Jepson Flora Project: Jepson Interchange    

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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.



Subshrub or shrub
Leaf very small, ephemeral
Inflorescence: panicle (raceme-like or flowers scattered along stems)
Flower bisexual; calyx persistent, 4-lobed; petals 4, erect in flower; stamens 8, in 2 series; ovary stalked, deeply 2-lobed, style thread-like
Fruit: capsule, deeply 2-lobed, leathery, opening at tip
Species in genus: 6 species: sw North America, s Africa
Etymology: (Greek: bush odor)


T. montana Torr. & Frémont

Stem 3–6 dm, broom-like, yellowish green, thickly covered with blister-like glands, generally leafless
Flower: sepals ± 2 mm, ± round, greenish; petals 8–12 mm, ± elliptic, ± leathery, purplish, tip rolled out; style ± exserted, ovules 8–9 per chamber
Fruit: lobes ± 5 mm thick, ± spheric
Seeds 1–3, ± 4 mm, reniform, whitish
Ecology: Dry slopes
Elevation: < 700 m.
Bioregional distribution: Desert
Distribution outside California: to New Mexico, Mexico
Flowering time: Mar–May
Horticultural information: DRN, DRY: 8, 9, 10, 11, 12, 13, 18, 19, 20, 21 &SUN: 7, 14, 15, 16, 22, 23, 24; DFCLT.

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