Some little gusano or beetle larva burrows into the epidermal tissue along the ribs.
6600' elevation on a mixture of limestone and shale talus with Karwinskia humboldtiana, Dasylirion longissimum, Jefea, Opuntia stenopetala,
3800 elevation
Population somewhat in rough shape. Lots of sunburn and dieback, quite likely due to drought and heat spell
Many in this population yellowing or dieing back with sunburn and heat stress. Hopefully rain arrives soon.
Elevation 4000' (1200m)
Elevation 1200 m (3800 m)
Much different ecotype here than in South Texas. Remarkable. More robust, lager diameter, different stem shape