Jepson eFlora: Taxon page
Vascular Plants of California
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Higher Taxonomy
Family: ZygophyllaceaeView DescriptionDichotomous Key

Habit: Annual, perennial herb, shrub, often armed; caudex present or not. Stem: branched; nodes often angled, swollen. Leaf: 1-compound, opposite, petioled; stipules persistent or not; leaflets entire. Inflorescence: flowers 1--2 in axils. Flower: bisexual; sepals 5, free, persistent or not; petals 5, free, generally spreading, twisted (corolla propeller-like) or not; stamens 10, appendaged on inside base or not; ovary superior, chambers (and lobes) 5--10, each with 1--several ovules, placentas axile. Fruit: capsule or splitting into 5--10 nutlets (= mericarps).
Genera In Family: 27 genera, +- 250 species: widespread especially in warm, dry regions; some cultivated (Guaiacum, lignum vitae; Tribulus, caltrop).
eFlora Treatment Author: Duncan M. Porter
Scientific Editor: Thomas J. Rosatti.
Habit: Perennial herb, unarmed; caudex woody. Stem: branched, fleshy. Leaf: stipules +- leaf-like or membranous; leaflets 2 [> 2], free, fleshy. Inflorescence: flowers 1--2 in axils. Flower: sepals often unequal, overlapping, deciduous or not; petals +- erect, white, yellow, or orange, base sometimes orange or red. Fruit: capsule, cylindric to spheric, 5-angled, septicidal. Seed: 1--few per chamber.
Species In Genus: +- 70 species: Eurasia, southern Africa, Australia. Etymology: (Greek: yoke leaf, from sometimes oblique leaflets)
Jepson eFlora Author: Duncan M. Porter
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

Previous taxon: Tribulus terrestris
Next taxon: Zygophyllum fabago

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Citation for this treatment: Duncan M. Porter 2012, Zygophyllum, in Jepson Flora Project (eds.) Jepson eFlora, eflora_display.php?tid=9719, accessed on January 18, 2020.

Citation for the whole project: Jepson Flora Project (eds.) 2020, Jepson eFlora,, accessed on January 18, 2020.