The Humboldt State University greenhouse has for some years grown a plant labeled U. peltata. The ICPS database states that U. peltata is a synonym for U. pubescens. Until this week, this plant has never flowered. Below are photos of the plant and flower.
There are several links to photos of U. pubescens listed in my Photo Finder,
Some photos show a dictinct yellow stripe below the "mouth", other photos closely resemble our plant, which has no such stripe.
Any guesses about the identity of the plant below? Is it indeed U. pubescens?