July 20, 2022 by mgnvmmfSpines_Ferocactus_wislizeni_fa._flavispina_Nov_MMF Up to five-inch long, central, fishhook spines of Ferocactus cylindraceus tortulospinus (curly-spine barrel) in November at the Arizona-Sonora Desert Museum. Photo © Mary Free About mgnvmmf Previous Post:Spines_Ferocactus_wislizeni_fa._flavispina_Nov_MMF