Growing near Astrophytum asterias in Starr County, Texas.
Growing with L. williamsii in Jim Hogg County, Texas.
The cambial tissues of the root yield a red
liquid when injured. This is referred to as 'dragon's blood' and is
valued as a medicinal. It should not be confused with the other plant
resins that are also called dragon's blood.
Growing near or with L. williamsii
var. echinata in
West Texas.
Example of the moving shade provided by Jatropha and similar
plants for L. williamsii var. echinata in West Texas.
Jatropha in Brewster County shown growing with Echinocereus
stramineus (L) and sheltering L. williamsii (R)
Occurring with L. fricii in Coahuila.
Growing with L. williamsii in Coahuila.
Shown with L. williamsii at
Miquihuana, Tamaulipas.
The plant showing abundant leaves; in L.
williamsii habitat in
Nuevo Leon.