Trees, shrubs, or rarely herbs; leaves usually once or twice pinnate; flowers mostly showy; sepals 5; petals 5; stamens mostly 10; ovary 1-celled; fruit a pod.
Texas Redbud (_Cercis reniformis_) is one of the handsomest shrubs of the limestone hill region of Texas and New Mexico. The pea-shaped flowers appear on last year’s wood in February or March, often remaining lovely for a month before the leaves appear. The leaves are a glossy green above, rounded and sometimes deeply notched or kidney-shaped (reniform), and usually 3-4 in. broad. The clusters of numerous red seed-pods are very conspicuous in the summer and autumn. The flat pods have a narrow wing on one side and are pointed at both ends, 2½-3 in. long and over ½ in. broad.
The Canadian or eastern redbud is found in the northern and eastern part of the state. It has smaller flowers and very pointed leaves. The western redbud grows in the mountainous region of the state and has similar leaves but smaller flowers.
The Asiatic redbud is called Judas-tree because Judas is supposed to have hanged himself from one of the trees. Redbud flowers, served either fried or pickled for salads, are sometimes eaten by people. It is an excellent shrub or small tree for highway and garden planting.
Two-Leaved Senna (_Cassia roemeriana_) gets its common name from the two spreading leaflets into which the leaf is divided. They are 1-2 in. long and have a slender stalk about the same length. The stems are commonly about 8-12 in. high, growing from a woody perennial root. The sparsely-flowered clusters of yellow flowers appear from spring until fall. The seed-pods are about an inch long and half an inch wide. This senna is very abundant from Central Texas into Mexico and New Mexico. It bears the name of Roemer, a geologist sent from Germany to study the geology of the grant made to the German colonists at New Braunfels. He was in Texas from 1845 to 1847, visited and botanized with Lindheimer at New Braunfels, and carried many new Texas plants back to Germany.
The senna group is very large and mainly tropical in distribution, many species being noted for medicinal properties. The coffee senna (_Cassia occidentalis_) and the American senna (_Cassia marilandica_) are common weeds in the eastern part of the state. The velvet-leaved or Lindheimer’s senna grows in the western part of the state.