The Niagara Cactus
It is no easy matter to find appropriate names for new varieties of plants, where so many of them are in evidence as in Mr. Burbank's gardens. Possibly no one recalls just why the present cactus was called the "Niagara,"-conceivably because its slabs tend so to overflow into space and buffet one another.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 8 Chapter 7