Cardiospermum grandiflorum	Cardiospermum halicacabum
biternate leaves, 18 cm long, younger stems densely hairy	biternate leaves, 4–12 cm long, younger stems finely hairy to almost hairless
flowers 6–11 mm long, petals 8–9 mm	flowers 3–4 mm long, petals 2–3 mm, inflorescence few-flowered
fruits 4,5–7 cm, broadest in the middle	fruits 1–3 cm, broadest at apex
Photo's C. halicacabum 1: R. & A. Heath www.plantsoftheworldonline.org; 2 & 3: H. Zell keyserver.lucidcentral.org/weeds/ Version April 2021