Cactaceae

Plants with jointed succulent stems bearing spines Cactaceae

Leaves absent or if present then reduced and terete. Flowers sessile Opuntia

Stem segments mostly more than 5 cm wide and 10 cm long

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At least 3–8 spines per areole. Spines terete 2–4 cm long, darkening with age. Segments obovate and compressed, bright green. Leaves to 4 mm long red-tipped. Perianth yellow. Staminal filaments pink. Fruit obovoid, reddish. Not common. Introd. from S. America. Opuntia elatior

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Areoles with 1 or 2 spines at most, rarely more.