What is "snapweed"

Impatiens \Im*pa"ti*ens\ ([i^]m*p[=a]"sh[i^]*[e^]nz), prop. n. [L., impatient.] (Bot.) A genus of plants, several species of which have very beautiful flowers; -- so called because the elastic capsules burst when touched, and scatter the seeds with considerable force. Called also touch-me-not, jewelweed, and snapweed. Impatiens Balsamina (sometimes called lady's slipper) is the common garden balsam.

n. (context botany English) Certain species of ''Impatiens''.