If there's a question on phylogeny I can refer to Judd et al, or MOBOT,
or grab sequences off EMBL and analyse them myself, but when it comes to
more traditional bits of botany such as floral anatomy I haven't yet got
myself properly trained.
Stewart Robert Hinsley

+ + +
On the other hand you might sit yourself down with Cronquist's magnum opus
or Kubitzki and look up all the details?
PvR