Aponogeton crispus

Aponogeton crispus is an aquatic bulb plant native to the island nation of Sri Lanka along with many of the other Aponogetons used in the Aquarium plant trade.  Aponogeton crispus is an excellent aquarium plant as the central focal point in a planted aquarium displaying long dark green leaves that have an undulating marign.

Hardiness: Easy
Light Needs: Medium
Plant Structure: Bulb
Family: Aponagetonaceae
Genus: Aponogeton
Region: Asia
Location: Sri Lanka
Size: Height: 25-50cm (10-20in)
Growth Rate: Fast

You are buying 1 rooted Crispus that is approx. 9" tall. They grow  quick so if you are wanting a tall plant give them a couple weeks and they will be.