How about nicotiana (common name : Flowering Tobacco)?

Mark
http://groups.google.com/group/Organic-Veggies

lissadell wrote:
Thanks, but I don't think that's it. There is only one bloom per stem.
Charles Wrote:
On Thu, 22 Jun 2006 00:07:03 +0000, lissadell
wrote:


I have a plant in my garden whose blooms open at dusk and die the next
morning. The leaves are very similar to a dandelion; the flower is
pale yellow with four petals forming a petunia-like bloom. Thanks for
any help, I am in Ontario, Canada


Check out evening primrose.


--
lissadell