From Tropica:
"Cryptocoryne usteriana is one of the taller cryptocorynes and is very easy to grow. Leaves are 3-5 cm wide with an embossed surface; they can easily reach more than 50 cm length. With good light and fertilization, the upper side of the leaves will obtain a dark green or bronze-green colour while the back of the leaves will turn burgundy red.
Propagation is by long runners, and the plant tolerates quite alkaline water very well."
Type: Rosulate
Origin: Asia
Growth rate: Slow
Height: 30cm+
Light demand: Low
CO2 : Low