....of the type of plumeria that has thick white petals ands a smaller flower ?

Cheryl, that's really not enough information for an ID. Do you happen to have a picture? Specifics of where you saw it?

Sorry for the delay. Busy at work again. sigh The request for a thick-petaled white flower, common in Hawaii came from a co worker. Speaking to him more about it, it seems he wants a celadine.

I call that a yellow rather than a white but it's probably 50/50 when you look at it. And yes, that certainly is thick petaled with great keeping quality and ubiquitous in Hawaii, for sure.

Thanks, Hetty. He lived in Hawaii for a few years. He wishes to return some day. He now lives in Texas where plumeria will grow well with some winter care.