Hi Jan Phal,
Thank you for the post,to answer your question 1)specimens of catsm.pileatum and c.gaskeliana are not found in National Herbarium of Trinidad,because Trinidad was trans shipment point lots of plants ended up in royal botanical gardens and this caused confusion( I think)
2)c.deckeri are found in N.W.trinidad they are self pollinated,are pale lavender colour.
veekay