Looks like Sansevieria Trifaciata Laurentii. As for the size, I would venture to guess it is growing conditions causing slow growth. Does that soil dry out enough, especially in the bottom of the pot?

Could be right but might be in the S. tri. futura class. If so, that's about as tall as it gets. 15" max. Some one here might give you a few pups come spring. I know Tiffiny plants some out side every year. She has extras when she digs them back up in the fall. Mine got too tall and big for me and I try to limit mine to the futura class. I have a few tall varieties but so far hasn't got over 24 inches.