+Flowers+ 149

Floral envelopes—Buttercup—Gamopetalous—Polypetalous— Epipetalous—Apocarpous—Woodsorrel—Syncarpous pistil—Geranium- coloured bracts—Composite flowers—Fading flowers—Flower expansion—Flower dissection—Cruciferous plants—Papilionaceous flowers—Honey glands—Entomophilous flowers—Catkins—Monœcious and diœcious flowers—Arum—Protection from insects and moisture.