S 'Tugela River Valley' ???
Here's a plant you seldom see - maybe. I obtained the plant as a NoID, I'm pretty sure it is the species decribed by Juan in "The Splendid Sanseveieria", but I wish he had called it S. sp from the Tugela River Valley. It has not flowered yet but Juan says it has a spike raceme. The largest leaf you see is about 10" long. The purple fades slowly over time.