Commelinales

along drainage course between low limestone hills in open flat of disturbed calcareous soil and gravel outwash as road bisects small arroyo; with Ibervillea, Lantana, Cyphomeris, Rivina and Hunnemannia

along drainage course between low limestone hills in open flat of disturbed calcareous soil and gravel outwash as road bisects small arroyo; with Ibervillea, Lantana, Cyphomeris, Rivina and Hunnemannia

along drainage course between low limestone hills in open flat of disturbed calcareous soil and gravel outwash as road bisects small arroyo; with Ibervillea, Lantana, Cyphomeris, Rivina and Hunnemannia

along drainage course between low limestone hills in open flat of disturbed calcareous soil and gravel outwash as road bisects small arroyo; with Ibervillea, Lantana, Cyphomeris, Rivina and Hunnemannia

along drainage course between low limestone hills in open flat of disturbed calcareous soil and gravel outwash as road bisects small arroyo; with Ibervillea, Lantana, Cyphomeris, Rivina and Hunnemannia

along drainage course between low limestone hills in open flat of disturbed calcareous soil and gravel outwash as road bisects small arroyo; with Ibervillea, Lantana, Cyphomeris, Rivina and Hunnemannia

along drainage course between low limestone hills in open flat of disturbed calcareous soil and gravel outwash as road bisects small arroyo; with Ibervillea, Lantana, Cyphomeris, Rivina and Hunnemannia

open roadside, crest of eastern escarpment of Madrean plateau in thin soil & gravel over volcanic tuffaceous substrate.

roadside drainage in grasses on volcanic tuff of grassy hillside. Species is difficult to distinguish from C. tuberosa and maybe conspecific

introduced from North America