Looks like Philodendron Moonlight to me

Bihai, thanks so much! I looked up the Philo. Moonlight and photos are exactly same, including flower. Interestingly, there is a Philo. Congo, and it is clearly not this plant. Forum wins the prize - what a great resource.

Hargyle, there is a Congo Philodendron, but yours is a Moonlight. It's really nice looking..Toni

Thank you. It is new, but a good size, and I have it outdoors in a screened lanai. I see vining philodendra growing semi-wild down here all the time. I hope that means the Moonlight will like it too. Unfortunately, it is listed as poisonous, and I have 3 cats (4 would make me officially a crazy cat lady, my children warn), and I may need to move them if I see any cat interested in nibbling. Wish me (and the cats) luck!