Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
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Duncan M. Porter

Herb, shrub, often armed; caudex present or not
Stem branched; nodes often angled, swollen
Leaves 1-compound, opposite; stipules persistent or deciduous; leaflets entire
Inflorescence: flowers 1–2 in axils
Flower bisexual; sepals 5, free, persistent or deciduous; petals 5, free, generally spreading, sometimes twisted and appearing propeller-like; stamens 10, sometimes appendaged on inside base; ovary superior, chambers 5–10, ovules 1–several per chamber, placentas axile
Fruit: capsule or splitting into 5–10 nutlets
Genera in family: 26 genera, ± 250 species: widespread especially in warm, dry regions; some cultivated (Guaiacum, lignum vitae; Peganum, harmal (NOXIOUS and illegal); Tribulus, caltrop (pernicious)). Peganum harmala L. has been reported as a pernicious weed near Daggett, San Bernardino Co
Reference: [Porter 1972 J Arnold Arbor 53:531–552]



Perennial, unarmed; caudex woody
Stem branched, fleshy
Leaf: stipules ± leaf-like or membranaceous; leaflets 2 or more, free, fleshy
Inflorescence: flowers 1–2 in axils
Flower: sepals often unequal, deciduous or not; petals ± erect, white, yellow, or orange, base sometimes orange or red
Fruit: capsule, cylindric to spheric, 5-angled, septicidal
Seeds 1–few per chamber
Species in genus: ± 70 species: Eurasia, s Africa, Australia
Etymology: (Greek: yoke leaf, from sometimes oblique leaflets)


Z. fabago L.

Stem erect, glabrous
Leaf: leaflets < 4.5 cm, 3 cm wide, obliquely ovate; awn between leaflets 1 mm
Flower 6–7 mm; sepals ± = petals; stamens exserted, appendages < stamens, ± linear, divided at tip
Fruit 25–35 mm, oblong-cylindric; style persistent, thread-like, < 7 mm; peduncle reflexed
Ecology: Uncommon. Disturbed areas
Elevation: < 1000 m.
Bioregional distribution: Outer North Coast Ranges, San Joaquin Valley, Desert
Distribution outside California: native to Mediterranean, c Asia
Flowering time: Summer
Synonyms: var. brachycarpum Boiss
Forms large colonies.

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bioregional map for ZYGOPHYLLUM%20fabago 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 Zygophyllum fabago
Retrieve dichotomous key for Zygophyllum
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