A robust straggling herb up to 2-3 ft. high, producing flbrous roots from the lower nodes
Leaves mostly elliptic to ovate, rarely all narrow and lanceolate
Inflorescence dense, about 1-21/2 in. across in fruit
Usually subglabrous, rarely rather densely pubescent
Flowers open from 7 a.m. to noon
Petals white to lilac