with …
one stem[?] emerging from the ground  or
multiple stems[?] emerging from the ground at one point :

One stem emerging from the ground

in a pleated cylinder, until old when it might start arms
saguaro  Carnegiea gigantea
 or
with knobby-looking branches that bifurcate[?] into smaller branches in a fractal pattern :

Knobby-looking branches that bifurcate into smaller branches in a fractal pattern

spines[?]=light, dense;                stem bark=​darker
jumping cholla  Cylindropuntia fulgida

spines[?]=dark, uneven length;  stem bark=​lighter
staghorn cholla  Cylindropuntia echinocarpa

Learn more about 🌵︎ cactus family Cactaceae

Part of order Caryophyllales.

▭ 🌎︎ Map (🇨🇦 Canada, 🇺🇸 USA) (colors).

Uses by native peoples
(Ethnobotany database)

🔍︎ 🔍︎ images Discover Life Encyclopedia of Life Flora of North America NRCS PLANTS db Wikipedia