Cyamopsis tetragonoloba

The guar (from Hindi: ग्वार: gvār) or cluster bean, with the botanical name Cyamopsis tetragonoloba, is an annual legume and the source of guar gum. It is also known as gavar, gawar, or guvar bean. The genus name Cyamopsis means bean-like (from Greek: κύαμος, romanized: kýamos: "bean" + Greek: ὄψις, romanized: ópsis: "view"). The specific name is from Greek: τετράγωνον, romanized: tetrágōnon and Latin: lobus (itself being a loanword of Ancient Greek λοβός) meaning four-squared-lobed. The origin of Cyamopsis tetragonoloba is unknown, since it has never been found in the wild. It is assumed to have developed from the African species Cyamopsis senegalensis. It was further domesticated in South Asia, where it has been cultivated for centuries. Guar grows well in semiarid areas, but frequent rainfall is necessary. This legume is a valuable plant in a crop rotation cycle, as it lives in symbiosis with nitrogen-fixing bacteria. Agriculturists in semi-arid regions of Rajasthan follow crop-r......read more on Wikipedia.