Dasyochloa Willd. ex Rydb. Dasyochloa Willd. ex Rydb. in Agric. Exp. Sta. Agric. Coll. Colorado Bull. 100: 18, 37. 1906 sec. Soreng & al. 2015=Tridens sect. Dasyochloa (Willd. ex Rydb.) Pilg., Nat. Pflanzenfam. (ed. 2) 14d: 36. 1956 syn. sec. Valdés Reyna & Dávila 1995