Are Lathyrus and Lyonothamnus both types of legume?
Lyonothamnus Lyonothamnus is a monotypic genus of trees in the rose family containing the single living species Lyonothamnus floribundus, which is known by the common name Catalina ironwood, and the subspecies "L. f." ssp. "aspleniifolius" and "L. f." ssp. "floribundus".
Tragacanth Tragacanth is a natural gum obtained from the dried sap of several species of Middle Eastern legumes of the genus "Astragalus", including "A. adscendens", "A. gummifer", "A. brachycalyx", and "A. tragacantha". Some of these species are known collectively under the common names "goat's thorn" and "locoweed". The gum is sometimes called Shiraz gum, shiraz, gum elect or gum dragon. The name derives from the Greek words "tragos" (meaning "goat") and "akantha" ("thorn"). Iran is the biggest producer of this gum.