Kallstroemia sp.
(c) Jacob Malcom, some rights reserved (CC BY-SA), uploaded by Jacob Malcom · licence
Family: Zygophyllaceae · Type: Annual · Variable; species dependent
Kallstroemia sp. is a non-native California annual in the Zygophyllaceae family.
How to tell it apart
vs Tribulus: Kallstroemia fruits are bumpy but harmless; Tribulus fruits have 2-4 stout tire-puncturing spines.; vs Eschscholzia: Kallstroemia has compound feather-like leaves; Eschscholzia has finely dissected lacy leaves and bright orange poppy flowers.; vs Zygophyllum: Kallstroemia has 6-18 thin leaflets per leaf; Zygophyllum has only 2 thick fleshy leaflets.; vs Larrea: Kallstroemia is a sprawling annual with orange flowers; Larrea is an upright shrub with yellow flowers.; vs Fagonia: Kallstroemia has soft feather-like leaves without spines; Fagonia has three rigid spine-tipped leaflets per leaf.
Frequently asked questions
Is Kallstroemia sp. native to California?
No. Kallstroemia sp. is not native to California (recorded as variable; species dependent).
What plant family does Kallstroemia sp. belong to?
Kallstroemia sp. is in the Zygophyllaceae family, genus Kallstroemia.
Related species
Other California species in the same genus, family, or bioregion.
Sources: Jepson eFlora · CalPhotos
Last updated 2026-04-14
Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Cal-IPC, and more.