Ferocactus wislizeni”Twisted Barrel Cactus”Central spines 4, forming a cross, the lowermost stoutest, and often hooked, 8-10 cm long. Radial spines about 12 needle- to bristle-like, to 5 cm. Flowers yellow to… https://t.co/iSOWLfvwmh

— Aydın DİNÇASLAN (@aydindincaslan) 2020.9.1

Come visit me at the ASPT booth to get your Ferocactus wislizeni t-shirt! #Botany2019 https://t.co/sBSWMVXrZE

— Adriana I Hernández, PhD (@calobot) 2019.7.31

cactguy: Ferocactus wislizeni / Arizona Fishhook Barrel Cactus / Macro https://t.co/dj3E3VyDw9

— Dustin Miller (@zoopunkwild) 2019.1.18

cactguy: Ferocactus wislizeni and Opuntia santa-rita / Arizona fishhook barrel cactus and Santa Rita... https://t.co/GREhw8GTLw

— Dustin Miller (@zoopunkwild) 2019.1.20