Doesn't like Kool-Aid
Join Date: Feb 2003
Location: Hawthorne, New Jersey
C. undulata is smaller than C balansae, so interchanging the two would be tough. the color is off a bit also, C. undulata is a bronzey color and most C. balansae are green.
The low lying Crypt you are describing sounds more like C. wendtii "Tropica" than C. undulata.