soapberry tree fruit and blue sky

berries biology blue branch branches branching bright bumpy cascade central covered deciduous distant distinctive ecology ethnobotany forest form formation fruit fruiting green growing habit highlights multiple oklahoma pattern saponin seasonal shadow shape shrub sky soapberry soapy sunlit temperate tree washing water waterfall winter wonder yellow nature natural seeds sapindus drummondii wingleaf tree woody fruiting cleaner botanical medicinal TEK traditional tribal botanical