Template:Sorrie at al., 2020
- Sorrie, B.A., McCormick, C.A., Bridges, E.L., Orzell, S.L., Bradley, K.A., Ballard Jr, H.E., Burwell, R.N., Lockhart, S.L. & Franck, A.R. 2020. Journal of the Botanical Research Institute of Texas 14(2): 199-239. JSTOR PDF