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32 caltrops and ratanies species
Tribulus terrestris
Zygophyllum fabago
Larrea tridentata
Porlieria angustifolia
Guaiacum coulteri
Tribulus cistoides
Guaiacum officinale
Guaiacum angustifolium
Fagonia californica
Krameria pauciflora
Fagonia densa
Fagonia scoparia
Sericodes greggii
Larrea cuneifolia
Larrea nitida
Fagonia laevis
Fagonia pachyacantha
Krameria bicolor
Kallstroemia californica
Kallstroemia maxima
Kallstroemia grandiflora
Guaiacum sanctum
Krameria erecta
Kallstroemia parviflora
Kallstroemia hirsutissima
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