This member of the Cucurbitaceae family was given this name by Edward Lee Greene in 1910. It is found in south-western U.S.A., growing in a well drained soil with some water and some sun. The caudex can grow up to 60 centimetres in diameter, and it is said to grow very long: Two meters. The vines can reach six meters, the flowers are white, and the fruits filled with soft spikes.
The genera name might be from Latin amarus; 'bitter' for the taste of the roots. The species name for the inflorescence's resemblance with Faba; broad bean.

