A lyside sulphur (Kricogonia lyside) on goldeneye (Viguiera dentata), a pipevine swallowtail (Battus philenor) on scarlet muskflower (Nyctaginia capitata), and queens (Danaus gilippus) on Gregg’s mistflower (Conoclinium greggii). I think only the large butterflies can take advantage of the scarlet muskflower, but the other two are huge favorites with just about every insect pollinator.
Ariocarpus is a unique genus in the Cactus Family native to northeastern Mexico and across the border into Texas. The hard tubercles making up the stem look almost leaf-like, and because of this people often do not realize it is a cactus. The flower color in Ariocarpus retusus ranges from white to faintly blushed with pink to deeper pink.