Notice the L. williamsii var. echinata
growing behind and to the left of a large Ferocactus hamatacanthus?
A younger specimen
This plant is sometimes confused with Sclerocactus (Glandulicactus)
uncinatus especially when small.
Compare the uncinatus
page to some of the image on this page.
Once you feel comfortable telling them apart, try
identifying these images.
The images below were taken of a plant under cultivation in Alpine, Texas.