Talk today on spiny Euphorbias - Bob Webb
 

This talk is finished. A recording will be soon be available at the Facebook page of the Cactus and Succulent Society of America. It will remain available until sometime Monday morning Pacific time February 21, 2022.


Today, February 19 2020 at 10 am Pacific time the Cactus and Succulent Society of America will present one of an ongoing series of talks. This is on spiny and mounding Euphorbias, given by Bob Webb. Members and non-members can register and watch.

Robert Webb has been giving a series of talks about Euphorbias. In this installment, he explores some of the intermediate-scale species of Euphorbia. The focus will be on plants in Yemen, East Africa, South Africa, and Namibia with some discussion of horticulture and propagation. Using an approach of mostly field-cultivation images, he will discuss some of the interesting species of Euphorbias in these two groups.

Dr. Robert H. Webb has worked on long-term changes in natural ecosystems of the southwestern United States and Baja California since 1976. He has degrees in engineering (B.S., University of Redlands, 1978), environmental earth sciences (M.S., Stanford University, 1980), and geosciences (Ph.D, University of Arizona, 1985). Since 1985, he has been a research hydrologist with the U.S. Geological Survey in Tucson and an adjunct faculty member of the School of Natural Resources and the Department of Hydrology and Water Resources at the University of Arizona. In addition to his research on long-term change in desert regions, he has collected succulent plants and cacti for 40 years.

Webb has authored or edited 14 books and about 225 scientific publications. He and his wife are the owners of Arid Lands Greenhouses in Tucson, Arizona, and Webb is the former chairman of the International Sansevieria Society. They have traveled extensively in Africa and Arabia, looking for and photographing succulent plants. They have been to Oman, Yemen, Socotra, Kenya, Tanzania, Uganda, Namibia, Botswana, and South Africa.

He has described and named ten species or subspecies of plants, including two Agave species from Baja California, Mexico, and eight Sansevieria species or subspecies from East Africa.