Pink Sensitive Briar (Leptoglottis uncinata) is also called pink mimosa and shame-vine, the latter name being given because of the leaf’s habit of closing when touched. The vines sprawl on the ground, growing out 2-4 ft. They are densely covered with small, recurved prickles. The leaves are divided as in other mimosas, having 4-8 pairs of divisions each bearing 8-15 pairs of short leaflets. The small, fragrant pink flowers are borne in dense heads. The pods are nearly round, densely covered with spines, and about 1½ in. long. It grows in dry soil from Virginia to Mexico, blooming in Texas in April and May.
Yellow Sensitive Briar (Neptunia lutea) is very much like the pink briar but has oblong heads of yellow flowers. The pods are smooth and flat and markedly narrowed at the base. The yellow briar grows in sandy soil from Oklahoma and Texas to Florida, blooming in June.
SENNA FAMILY (Cassiaceae)
TEXAS REDBUD
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.
