Like orchids, the vegetative structures of most species are very similar and species and cultivars can only be identified by the colors and physical characteristics of their large flowers.
(the vegetative structures of most species; are; very similar) (species and cultivars; can only be identified; by the colors and physical characteristics of their large flowers)
the vegetative structures of most species species and cultivars
are can only be identified
very similar
by the colors and physical characteristics of their large flowers