Harley (Briq.) 1983 - Harley RM (1983) Hyptis alata, Amphitropically Disjunct in the Americas. Notes on New World Labiatae V. Kew Bulletin 38(1): 47-52. doi: 10.2307/4107960.
There is no corrections for Hyptis alata subsp. rugosula yet.