Kral R (1971) A TREATMENT OF ABILDGAARDIA, BULBOSTYLIS AND FIMBRISTYLIS (CYPERACEAE) FOR NORTH AMERICA. Sida, Contributions To Botany 4(2): 57-227. Retrieved from http://www.jstor.org/stable/41967336
There is no corrections for Fimbristylis puberula var. interior yet.