I found the following publication at Koeltz Scientific
TITLE : Hay, A., J. Bogner, a.oth.: Checklist and Botanical Bibliography of
the Aroids of Malesia, Australia, and the Tropical Western Pacific Region.
1995. (Blumea,Suppl.8).210 p.gr8vo.
The above is suppose to list 1437 species and include New Guinea. Perhaps
it might have some information on our mystery Rhaphidophora. I suspect this
is in the libraries of many of you Aroid folk; I ordered a copy for myself.
Nothing like a good bibliography to get one on the right track. $34 US.
jack in Oregon