Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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Staria S. Vanderpool

Annual, shrub, tree, ill-smelling
Leaves generally 1-palmate, generally alternate, generally petioled; stipules generally minute, often bristle-like or hairy; leaflets 3–7
Inflorescence: raceme, head, or flowers solitary, generally longer in fruit; bracts generally 3-parted below, simple above, or 0
Flower generally bisexual, radial to ± bilateral; sepals generally 4, free or fused, generally persistent; petals generally 4, free, ± clawed; stamens generally 6, free, exserted, anthers generally coiling at dehiscence; ovary superior, generally on stalk-like receptacle, chamber generally 1, placentas generally 2, parietal, style 1, persistent, stigma generally minute, ± head-like
Fruit: generally capsule, septicidal; valves generally 2, deciduous, leaving septum (frame-like placentas) behind; pedicel generally ± reflexed to spreading
Genera in family: 45 genera, 800 species: widespread tropical to arid temp; some cultivated (Capparis spinosa , caper bush)
Reference: [Ernst 1963 J Arnold Arbor 44:81–93]
CA members placed in subfamily Cleomoideae. Alternate family name: Capparidaceae.


Annual, generally ± glabrous
Stem generally branched from upper nodes
Leaf: petiole 5–45 mm; leaflets generally 3
Inflorescence: raceme, terminal, generally 1–4 cm in flower, generally 5–40 cm in fruit; pedicels 4–20 mm
Flower often ± unisexual (stamens or pistils vestigial), ± bilateral, most parts generally yellow; sepals free or fused; petals sessile to short-clawed
Fruit: capsule, longer than wide; septum linear to oblong; receptacle stalk-like, reflexed to ascending
Seeds 10–40
Species in genus: 150–170 species: especially tropical, subtropical Am, Africa; some tropical weeds
Etymology: (Early Eur name for a mustard-like plant)


C. serrulata Pursh


Plant open, 3–8 dm, ± glabrous
Leaf: leaflets 2–6 cm, elliptic
Flower: sepals fused in basal half, persistent, generally 1.7–3 mm, ovate, acuminate, minutely dentate, purple to green; petals 7–12 mm, oblong to ovate, purple, rarely white; stamens 18–24 mm, purple, anthers 2–2.3 mm, green; style 0.1–0.5 mm
Fruit 30–55 mm, 3–6 mm wide, ± round in transverse section, smooth; receptacle 10–15 mm
Chromosomes: 2n=34,60
Ecology: Sagebrush scrub, pinyon/juniper woodland
Elevation: 1200–1700 m.
Bioregional distribution: Klamath Ranges (occasional waif in s California)
Distribution outside California: to Great Plains, s British Columbia
Horticultural information: TRY.

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bioregional map for CLEOME%20serrulata being generated
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).

Retrieve Jepson Interchange Index to Plant Names entry for Cleome serrulata
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Overlay Consortium of California Herbaria specimen data by county on this map
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