JALAP n.
The tubers of the Mexican plant Ipomoea purga (or Exogonium purga), a climber much like the morning-glory. The abstract, extract, and powder, prepared from the tubers, are well known purgative medicines. Other species of Ipomoea yield several inferior kinds of jalap, as the I. Orizabensis, and I. tuberosa. False jalap,…
JERUSALEM n.
Gyre, Solar.] (Bot.) (a) An American plant, a perennial species of sunflower (Helianthus tuberosus), whose tubers are sometimes used as food. (b) One of the tubers themselves. -- Jerusalem cherry (Bot.), the popular name of either of either of two species of Solanum (S. Pseudo-capsicum and S. capsicastrum), cultivate…