Lithops villetii subsp. villetii sec. Cole & Cole 20171
≡Lithops villetii var. villetii syn. sec. The Plant List v. 1.1 20132
1.Cole, D. T. & Cole, N. A. 2017: Lithops. – In: Hartmann, H. E. K., Illustrated handbook of succulent plants. Aizoaceae, ed. 2. – Berlin: Springer, 2.TPL
