COLUTEA, BASTARD-SENA, in botany; a genus of the decandria order, belonging to the diadelphia class of plants. There are three species, all of them deciduous flowering shrubs, adorned with many lobed leaves, and butterfly-shaped flowers, of a deep yellow or red colour. They are propagated both by seeds and layers, and are hardy enough, though they sometimes require a little shelter, when the weather is very cold.