弯距狸藻 wan ju li zao

Utricularia macrorhiza Le Conte, Ann. Lyceum Nat. Hist. New York 1: 73. 1824; Lentibularia vulgaris var. americana (A. Gray) Nieuwland & Lunell; Megozipa macrorhiza (Le Conte) Rafinesque; U. vulgaris var. americana A. Gray.

Spur ± as long as corolla lower lip, markedly curved upward, with internal glands on both dorsal and ventral surfaces. 2n = 44.

Lakes, pools, ditches, rivers, rice fields; near sea level to 3500 m. Gansu, Hebei, Heilongjiang, Henan, Jilin, Liaoning, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shandong, Shanxi, Sichuan, Xinjiang [Mongolia, Russia (Altai to Kamchatka); North America].

P. Taylor (Kew Bull., Addit. Ser. 14: 594-598. 1989) treated Utricularia vulgaris subsp. macrorhiza as a U. macrorhiza.