Piper sempervirens (Trel.) Lundell Piper sempervirens (Trel.) Lundell in Publ. Carnegie Inst. Wash. 478: 208. 1937 sec. Villaseñor & al. 2010≡Arctottonia sempervirens Trel. in Publ. Field Mus. Nat. Hist., Bot. Ser. 12: 405–406. 1936 syn. sec. Villaseñor & al. 2010