CSSA VOL.95, Winter 2023, No.4 Editorial Peter Breslin Ramblin' round Alberta cactus country Rene Haasdyk & Suzanne Lariviere Yucca baccata - with red flowers Root Gorelick Dioecy in Cactaceae: species with unisexual flowers Michael A. Wisnev Opuntia macrocentra and Opuntia azurea: two attractive and often confused taxa Dean Stock New contact zones between Lithops karasmontana subsp. eberlanzii and Lithops francisci Peter Beiersdorfer, Jaan K. Lepson, Hilde Mouton & Frikkie Mouton

On the cover: Cover photo: A fiercely spiny Cylindropuntia chuckwallensis in flower. C. chuckwallensis is a recently described gynodioecious hexaploid, and if you'd like to know exactly what that means, see Mike Wisnev's article on cacti with unisexual flowers. Photo by Michelle Cloud-Hughes. Back cover: Brilliant yellow and orange colors of a flower of Opuntia polyacantha growing in Alberta, Canada. For more insight into the cacti of Canada, see the article by Rene Haasdyk and Suzanne Lariviere.