Will, B., T. Kromer, M. Kessler, D. Karger, and H. Luther. “Three New Species and Two New Records of Greigia Regel (Bromeliaceae) from Bolivia”. Selbyana, vol. 30, no. 1, July 2019, pp. 91-100, https://ojs.test.flvc.org/selbyana/article/view/115491.