mouse trap tree, uncarina grandidieri

africa african arboretum black bloom blossom botanical botanist botany collection decaryi dimidiata drought dry endemic europe exotic flora flower flowers forest garden grandidieri harpagophytum hobby horticulture houseplant humbert madagascar peltata petals plant plants rain sesame shrub spring stamen stellulifera stem succulent summer swiss switzerland tolerant tropical turicana uncarina yellow zurich