Oenothera cespitosa Nutt. var. stellae S.L. Welsh. Named for Dr. Welsh's spouse and a co-collector of the type.April 22, 2006, Kane County, Utah, approx. 5,650 ft. elev., in the vicinity of the type.First named in 2003, Stella's evening-primrose is a fairly rare endemic mound-forming taxon that grows on harsh substrates (mainly calcareous or limestones shales) in four counties in southern Utah, and is thought to be long-lived, colonial, leaves densely hirsute, appearing gray or gray-green. Growing near and on similar habitat as Physaria tumulosa (syn. Lesquerella tumulosa).As pictured above, it is in a very early stage of "coming back to life."