Tropicals & Tender Perennials: Xanthosoma robustum vs Xanthosoma sagittifolium, 1 by bwilliams

bwilliams wrote:
Their is not much argument on sagittifolium but I have seen problems with robustum usually robustum has streaked stems with some purple or blue coloring to them. Their are arguments that their are several different forms or possibly hybrids with violaceum and atroverins. The following picture is one IDed as Xanth robustum by one of the leading botanist. The spath color is usually white to a slight pink on robustum. It would be yellow to a off white on sagittifolium.
I believe the botanist are having a hard time with this group but sagittifolium should be the easiest to ID and most common.