Nobel P. S., Geller G. N., Kee S. C., Zimmerman A. D., Temperatures and thermal tolerances for cacti exposed to high temperatures near the soil surface, Plant, Cell & Environment, 1986, 9(4):279-287, doi: 10.1111/1365-3040.ep11611688
The paper compares temperature and thermal acclimation of cacti at ground level, including Ariocarpus fissuratus. It assesses tissue responses to heating through dye uptake, among other measures.