Most of the Coronillas are herbaceous, but Emerus, the Scorpion Senna, is a deciduous hardy shrub. It belongs to the Pea order (Legumi-nosae) and has yellow flowers in April. Height about three feet. Ordinary soil.
Two species: pauciflora and spicata, are offered. Both have yellow flowers in winter, opening in advance of the leaves, and grow up to six feet high. They ought to be grown on a wall border. Ordinary soil.
See Chapter 16. and 18. For special kinds see the chapter on modern plants.