The cactus family (Cactaceae) comprises around 2,000 species of succulent plants that have undergone remarkable diversification across the Americas. Modern phylogenetic analyses integrate nuclear and ...
THE issue of the fourth volume of “The Cactaceæ” brings this sumptuous monograph of the family to a conclusion. Previous volumes have been discussed in NATURE, vol. 107, p. 580, and vol. in, p. 426.
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