physic nut leaves, purging nut or barbadose nut jatropha curcas l

agriculture asia background barbados beauty biodiesel biofuel biomass black botanical botany branch bright bubble bush closeup color curcas energy environment euphorbiaceae flora foliage fresh fuel garden green growing growth image jatropha leaf leaves natural nature nut oil organic outdoor pattern photography physic plant poison pot potted purging refining soap summer texture tree tropical vegetable