Coulteria
(named after Thomas Coulter, M.D., author of a Monograph on the Natural Order Dipsaceoe). This is now regarded as a mere section of the large genus Caesalpinia. Stove evergreen shrubs, with spines in the axils of the abruptly pinnate leaves. Flowers yellow, disposed in racemes; pedicels articulated, under the flower. For culture, see Caesalpinia. C. horrida and C. tinctoria are the only two species which have been introduced into this country, and probably these are only seen in botanic gardens.