Sagittaria subulata (L.) Buchenau Sagittaria subulata (L.) Buchenau in Abh. Naturwiss. Vereins Bremen 2: 490. 1871 sec. Ulloa Ulloa & al. 2018=Alisma subulatum L., Sp. Pl. 1: 343. 1753 syn. sec. The Plant List 2013