Succulents in Sansevieria Genus

I've learned that succulents in sansevieria  are "hard-to-kill" plants and have air purifying properties. This answer my question about appropriate plants that thrive indoor, with low light conditions. With that new discovery, I will be collecting more sansevieria.  I have 3 types at present, a Sansevieria  Trifasciata popularly known as snake plant or mother-in-laws tongue and bird's nest, Sanseviera Cylindrica,  and a Sansevieria Hahnii or bird's nest.  

I really enjoy researching  the name of every plant I bought.  By the way, here are my new "babies" enjoying Mr. Sun. I brought them outside a while ago.  

Here’s a short trivia for you, guys:

Sansevieria (pronounced as san-se-vi-ee-ri-ah) belongs to the Lily Family which leads the list as being the most tolerant decorative plants.  The genus was named after the Prince Sanseviero who was born in Naples in 1710. (source: http://plantcaretoday.com)

Happy Gardening!