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  Re: Help i.d. these aroids
From: "Julius Boos" <ju-bo at email.msn.com> on 1998.05.15 at 15:23:38(2136)
Dear Bob,
The commoner (in cultivation) species of Xanthosomas have sagittate leaves,
while the commoner species of Colocasias (and Alocasias) have peltate
leaves. As in everything to do with Aroids, there are exceptions to these
rules, as there are even cultivars of Taro (Colocasia) in Hawaii with
sagittate leaves ("Piko" types, according to Deni Bown`s book) where they
"have their blades lobed to the navel or piko". She also has good
illustrations of these two types of leaves, Colocasia and Xanthosoma. By
the way, Aroiders out there, any more news on a re-print of this wonderful
book??? There are also smaller species of Xanthosoma that I`ve seen from
S. America with peltate, pubescent leaves. This may explain why no one has
stated that Xanthosoma leaves are NOT peltate. There would be many terms
for a petiole attachment that was not peltate, depending on HOW/WHERE it was
Hope that this helps,
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