Acalypha

in road bed gravels along highway right-of-way on low hillside slope of white chalky limestone. View of pistillate flowers in leaf axils below the spike-like thyrse of staminate flowers held above the foliage

hillside slope with calcareous gravels on over white blocky limestone outcrops. An exceptionally rich and diverse flora site less than 100 yards east of Coahuila state line.

hillside slope with calcareous gravels on over white blocky limestone outcrops. An exceptionally rich and diverse flora site less than 100 yards east of Coahuila state line.

on roadside drainage swale below vertical roadcut cliff face, in mixed coarse limestone spall and roadbed base gravels and sands.

I thank Dr. Walter Judd for help with identification.

I thank Dr. Walter Judd for help with identification.

Disturbed calcareous soil on old brush cleared, grassy area bordering a roadside borrow pit just east of Atascosa River

disturbed calcareous soil on old brush cleared, grassy area bordering a roadside borrow pit just east of Atascosa River

disturbed calcareous soil on old brush cleared, grassy area bordering a roadside borrow pit just east of Atascosa River

disturbed calcareous soil on old brush cleared, grassy area bordering a roadside borrow pit just east of Atascosa River