This deciduous genus belongs to the Pea order (Leguminosae). Very few are offered, but arborescens and its drooping form pendula are sometimes seen; more rarely one meets with Redowskii and spinosa (syn. ferox and Robinia ferox). All have yellow flowers in spring. They like a well-drained loamy soil, not a damp, heavy soil and site.
The only species, californica, is one of the most beautiful of the rarer evergreens, having large white fragrant flowers in spring. It is best grown on a low wall except in very mild districts, as it is not fully hardy. Ordinary soil suffices.
This is the botanist's name for the Hornbeam, a tree resembling Beech, and having the same character of holding its withered leaves for a long time in winter. It makes a good tall hedge. The common Hornbeam is C. Betulus. Incisa is a variety of it with ornamental leaves, and there are variegated sorts. Ordinary soil. It thrives on moist clay.