myxodex
Well-Known Member
Very interesting discussion. The comments above about species variation chime with me. Just take a look at the taxonomic nightmare presented by the cichlid fishes of lake Malawi. I wonder how easy it is to find Neo's in the wild these days and what sort of variation exists. I have to wonder whether the bean leaf types and the pine needle types are adaptations to different micro climates. For example the bean leaf varieties tend not to loose their lower leaves as readily and have thicker leaves thus lowering the surface area to volume ratio ... adaptation to relatively drier conditions possibly? It is probably genetically simpler for leaf variagation to arise, possibly single locus mutations appearing during cultivation and I cannot imagine any advantage in this for a wild plant, but who knows? Do we know of what variation existed out there in the Edo period when people started collecting these ?