Pretty sure this is “Thunbergia battiscombei,” which goes by a few common names: “Blue Boy”, “Blue Glory” and “Clock Vine.” From a contributor at floridata.com, http://floridata.com/Plants/Acanthaceae/Thunbergia%20battiscombei/936 » “Even the fuzzy, greenish-white buds are showy as they rest upon the bright green leaves. When one of the rich blue-purple trumpet flowers bursts forth from a slit in the fuzzy bud you can almost hear it announce itself with a 'tah dah!' that makes you want to applaud. Yes, it's that pretty and it is easy to grow, virtually pest free, and almost constantly in bloom! Northern gardeners looking for heat resilient, non-stop bloomers for summertime gardens will want to try this plant (it occasionally pops up for sale at large retail garden center so keep your eye peeled for it!)”
Retired economics professor (“dismal scientist”). Married 40+ years to the love of my life; we have two grown daughters, both married, two granddaughters and a...