Mimosa. There are several plants, however, besides the mimosa which give evidence of being sensitive. The Venus Fly Trap (Dionoea muscipula) has jointed leaves, which are furnished on their edges with a row of strong prickles. Flies, attracted by honey which is secreted in glands on their surface, venture to alight upon them. No sooner do their legs touch these parts than the sides of the leaves spring up, and locking their rows of prickles together, squeeze the insects to death. The well-known sensitive plant {Mimosa sensitiva), shrinks from the slightest touch. Oxalis sensitiva and Smithia sensitiva are similarly irritable, as are the filaments of the stamens of the berberry. One of this sensitive tribe, Hedysarum gyrans, has a spontaneous motion; its leaves are frequently moving in various directions, without order or co-operation. When an insect inserts its proboscis between the converging anthers of a dog's bane (Apocynum androssoemifolium), they close with a power usually sufficient to detain the intruder until death.