Subclass consisting of 13 families, and about 11,000 species of angiosperms - the bulk of the subclass often referred to as the Centrospermae. The Caryophyllidae is a distinctive group usually defined by the presence of betalain pigments rather than anthocyanins, free-central (hence the name "Centrospermae") or basal placentation in a compound ovary, and an impressive list of anatomical and embryological features
Why is a christmas cactus a caryophyllales?
P-type sieve-tube plastids, the presence of betalains instead of anthocyanins, frequent occurrence of succulent habit, free-central or basal placentation.
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