List below is largely based on data from:
- Our field observations
- Janssen, G.K., P.S. Williamson, J.M. Poole, S.J. Birnbaum, A.W. Furguson, A.W. Strong, et al. 2010. Final Report: The Research and Recovery of Star Cactus (Astrophytum asterias)
This page is under construction. In the meantime you can find full information on our old webpage.