The species is one of the few perennial shrubs at Jebel Uweinat that manages to remain green even in periods of drought. The species was noted in lower Karkur Talh and lower Wadi Wahesh, in both instances heavily grazed by gazelle. Fresh growth of the species was also noted in both lower and upper Wadi Handal following the rains of 2005, and in upper north western Karkur Talh in the area affected by the local rainfall in 2006. In october 2006 the lower Karkur Talh individuals were clearly invigorated despite their location well below the end of the 2005 runoff, and lower Wadi Handal was filled with large bright green individuals of the species. A single heavily grazed individual was noted in middle Karkur Talh in March 2007, probably a remnant growth of the 2005 rains. In October 2007, the dense population observed in the lower Wadi Handal a year earlier was still thriving, more than two years after the original rainfall.

Lower and middle Wadi Handal (Jebel Uweinat), 20th/23rd October, 2005

Lower Wadi Wahesh (Jebel Uweinat), in sandy wadi bed (with Aerva persica), October 2005		South Uweinat, in sandy wadi bed (with Citrullus colocynthis), November 2004		Lower Karkur Talh (Jebel Uweinat), in sandy wadi bed, October 2005

Lower Karkur Talh (Jebel Uweinat), heavily grazed, October 2005
Green Crotalaria thebaica in lower Karkur Talh (Jebel Uweinat), October 2006 (same as the ones above observed in October, 2005)

Fresh growth, upper Karkur Talh, October 2006

Lower Wadi handal (Jebel Uweinat), October 2006

Heavily grazed, middle Wadi handal (Jebel Uweinat), October 2006		Upper northern tributary of Wadi Handal (Jebel Uweinat), October 2006

Heavily grazed, middle Karkur Talh (Jebel Uweinat), March 2007

Lower Wadi handal (Jebel Uweinat), October 2007