abundant brown cannonball like cannonball tree containers couroupita guianensis deciduous fruit hard large lecythidacceae round seed pods shells tree unusual usage utensils woody shells brown cannonball like flowers fragrant Hindu worship pink waxy worship use yellow branched branches cannonball-tree couroupita-guianensis flowering Hindu-worship petals strands twisted worship-use Asia Costa Rica Couroupita guianensi Lecythidaceae Panama plant tropical