the flower of acer truncatum bunge

12 13 acer angles april axils base bisexual bunge centimeters circularly clusters deciduous disk edge family firm flat flower flowering flowers form fruit fruiting genus hairs heart height inflorescence inserted leaf leaves length lobes long male may meters nature nucleus obovate obtuse obvious ovate palmate period petiole plant rectangular round sapindaceae season september shaped small sparsely spring terminal tree triangular truncatum two umbrella veins wide wings young