Terry M., Trout K., Williams B., Herrera T., Fowler N., Limitations to natural production of Lophophora williamsii (Cactaceae) I. Regrowth and survivorship two years post harvest in a South Texas population, Journal of the Botanical Research Institute of Texas, 2011, 5(2):661-675
The first stage of an experiment begun in 2008 on 100 plants in southern Texas. The paper presents two-year survival, the number and size of regrowing crowns and their fresh mass. It compares regeneration after crown loss with an undamaged control and distinguishes increased branching from restoration of the entire above-ground part.