Mcclelland, R.K.S., Weakley, A.S. & Poindexter, D.B. (2023)

Seven new species of Trichostema (Lamiaceae: Ajugoideae) from the North American Coastal Plain biodiversity hotspot

. Phytotaxa 603 (2): 95–149. https://doi.org/10.11646/phytotaxa.603.2.1