Euphorbia antisyphilitica
with Selaginella lepidophylla
Big Bend National Park, TX
Nov 1978

Euphorbia brachycera
Black Mts., Mohave Co., AZ
10 Apr 2008

Euphorbia brachycera

Colorado—Great Basin Desert. Moffat Co., Hwy 318, 16 miles northwest of Maybell, 1 mile on BLM Rd north of Hwy; 40º36'30.8", 108º20’18.1”, 1760 m. Gypsum and sand dunes, Pinyon-juniper woodland.

Euphorbia ceroderma
SW Pacific Coast, BCS
Mar 1996 

Euphorbia misera
Vizcaíno Desert, BCN
Mar 1980

Euphorbia adenoptera

Euphorbia bicolor

Euphorbia ipecacuanhae

Euphorbia zinniiflora