Lupine, << LOO puhn, >> is the name of a group of plants in the pea family. Lupines have wandlike clusters of showy blue, yellow, white, or red flowers that resemble sweet peas. The leaves have several narrow leaflets, all attached at the same point. About a hundred kinds of lupines grow in North America. Some kinds contain poisonous alkaloids, but the seeds of others can be eaten after they have been properly prepared and cooked.