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