Janie knows that if there is a botanical question, I might not rest until I find the answer. I looked up Mountain Laurel or Kalmia latifolia, of the Heath family. I had a hunch that this was not the plant in question. Sure enough, further browsing brought up TEXAS Mountain Laurel or Sophora secundiflora, of the pea family (Fabacea). It's important here to mention that this information came from The Ladybird Johnson Wildflower Center, where you can read the description and see a photo. I've visited the LBJ Ranch and wish to visit the Wildflower Center recently pictured on Pam's blog Here if I ever see Texas again. If you visit there, please post lots of pics.
I do digress. Back to the question of artifical grape fragranced plants and their families, also in the Pea family are Cercis spp. including Texas Redbud and our Eastern Redbud. Wisteria is also in the Fabacea family but it's a stretch to think of it as grape flavored, just grape colored and sweetly fragrant.
Pansies, Potted Verbena, Boxwood and Camellia.
Garden Junk Phase, 2005
Boxwood has its own family: Buxus is a genus of about 70 species in the family Buxaceae. Common names include Box (most English-speaking countries) or Boxwood (US).
Not only are there Buxus natives of European origin and Asian origin, Africa has more than a dozen species of Box. Central and South America have another dozen or so.
It is beyond the scope of my comprehension to undertake a discussion of dicots, eudicots and monocots. I shook their family trees and no Koolaid packets fell out.