Lopes da Cunha Neto, I., Angyalossy, V., & Douglas, N. A. (2019). What are the "sticky rings" on stems of Anulocaulis and related taxa (Nyctaginaceae) from arid regions?. Journal of the Botanical Research Institute of Texas, 13(2), 477-485. https://doi.org/10.17348/jbrit.v13.i2.803