life
cycle - perennial, reproducing by seed and occasionally
by rootstocks
stems -
upright, branching, pubescent growth
habit 1, growth
habit 2, growth
habit 3
leaves -
opposite, ovate-lanceolate, pubescent, margined petioles below,
sessile above leaf rosette
flowers -
5-petaled, white to sometime pinkish, "bladder
-like"; petals notched; male and female on separate plants;
calyx inflated, hairy, prominently veins (10 male or 20 female);
open in evening; stalked and axillary flowers 1, flowers 2, inflated calyx 1, inflated calyx 2