Montgomery, Benjamin R, and Caleb W. Phillips. “Breeding System of Linum Rigidum and Effect of Heterospecific Pollen from Introduced Euphorbia Esula”. Journal of Pollination Ecology 16 (July 20, 2015): 101–107. Accessed May 5, 2024. https://www.pollinationecology.org/index.php/jpe/article/view/331.