FIG. 33.23 Eudicot diversity and phylogeny. Eudicots include (a) red oak trees (Quercus rubra), (b) tropical passionflower vines (Passiflora caerulea), (c) Banksia shrubs, native to Australia, and (d) beavertail cactus (Opuntia basilaris). (e) The tree shows a phylogeny of eudicots, with well-known species indicated. Groups with <3000 species are not shown.

Photo sources: a. Michael P Gadomski/Getty Images; b. Sergio Hayashi/Dreamstime.com; c. Joanne Harris/Dreamstime.com; d. Danita Delimont/Getty Images.