FIGURE 1. Acanthocereus atropurpureus. A in A new endemic species of Acanthocereus (Cactaceae) from southern Jalisco, Mexico

FIGURE 1. Acanthocereus atropurpureus. A: habitat, habit, and growth form. B: morphology of the adult stem. C: thickened root. D: areole and spination. E: morphology of the young plant. F: mature stem with nocturnal anthesis of the flower. G: external morphology of the flower. H: longitudinal section of the flower. I: immature fruit. J: external morphology of the mature fruit. K: longitudinal section of the fruit.