Euphorbia bartolomaei Greene Euphorbia bartolomaei Greene, Pittonia 1. 1889 sec. Ulloa Ulloa & al. 2018=Chamaesyce bartolomaei (Greene) Millsp. in Publ. Field Mus. Nat. Hist. Bot. Ser. 2(11): 408. 1916 syn. sec. Martínez-Gordillo & al. 2006