(Thunb.) Schott - Korea, Japan, Ryukyu Islands, Jiangsu, Taiwan, Zhejiang Arisaema rostratum V.D.Nguyen & P.C.Boyce - Vietnam Arisaema roxburghii Kunth - Assam, Indochina Arisaema rubrirhizomatum H.Li & J.Murata - Yunnan Arisaema ruwenzoricum N.E.Br. - Zaire, Uganda, Burundi Arisaema sachalinense (Miyabe & Kudô) J.Murata - Sakhalin in Russia, Hokkaido in Japan Arisaema saddlepeakense P.S.N.Rao & S.K.Srivast - Andaman Islands Arisaema sarracenioides E.Barnes & C.E.C.Fisch. - Kerala Arisaema saxatile Buchet - Sichuan, Yunnan Arisaema sazensoo (Blume) Makino - Kyushu Arisaema schimperianum Schott - Zaire, Ethiopia, Sudan, Uganda Arisaema scortechinii Hook.f - Peninsular Malaysia Arisaema seppikoense Kitam. - Honshu Arisaema serratum (Thunb.) Schott - Primorye, Korea, Kuril Islands, Japan, northeastern China Arisaema setosum A.Sudh.Rao & D.M.Verma - Arunachal Pradesh Arisaema siamicum Gagnep. - Thailand, Vietnam Arisaema siangense Gusman - Arunachal Pradesh Arisaema sikokianum Franch. & Sav. - Shikoku Arisaema silvestrii Pamp. - China Arisaema sinii K.Krause - China Arisaema sizemoreae Hett. & Gusman - Thailand Arisaema smitinandii S.Y.Hu - Thailand Arisaema somalense M.G.Gilbert & Mayo - Somalia Arisaema souliei Buchet - Sichuan, Chongqing Arisaema speciosum (Wall.) Mart. - Cobra lily - Tibet, Nepal, Assam, Bhutan Arisaema stewardsonii Britton - eastern Canada, eastern United States Arisaema sukotaiense Gagnep. - Yunnan, Thailand Arisaema taiwanense J.Murata - Taiwan Arisaema tengtsungense H.Li - Yunnan, Myanmar Arisaema ternatipartitum Makino - Japan Arisaema thunbergii Blume - Japan, Korea, Taiwan Arisaema tortuosum (Wall.) Schott - Whipcord cobra lily - India, Sri Lanka, Bangladesh, Himalayas, Nepal, Assam, Pakistan, Tibet, Yunnan, Myanmar Arisaema tosaense Makino - Japan Arisaema translucens C.E.C.Fisch - Nilgiri Mountains in Tamil Nadu in India Arisaema triphyllum (L.) Schott in H.W.Schott & S.L.Endlicher - Jack-in-the-pulpit - eastern Canada, eastern United States Arisaema tsangpoense J.T.Yin & Gusman - Tibet Arisaema tuberculatum C.E.C.Fisch. - Nilgiri Mountains in Tamil Nadu in India Arisaema ulugurense M.G.Gilbert & Mayo - Uluguru Mountains in Tanzania Arisaema umbrinum Ridl. - Borneo Arisaema undulatifolium Nakai - Honshu + Shikoku in Japan Arisaema utile Hook.f. ex Schott - Tibet, Yunnan, Nepal, Bhutan, Himalayas of India + Pakistan Arisaema vexillatum H.Hara & H.Ohashi - Tibet, Nepal Arisaema victoriae V.D.Nguyen - Yunnan, Guangxi, Vietnam Arisaema wangmoense M.T.An, H.H.Zhang & Q.Lin - Guizhou Arisaema wardii C.Marquand & Airy Shaw - Qinghai, Shanxi, Yunnan, Tibet Arisaema wattii J. D. Hook. - Assam, Myanmar, Tibet, Yunnan Arisaema wilsonii Engl. - Tibet, Bhutan, Gansu, Sichuan, Yunnan Arisaema wrayi Hemsl. - Thailand, Sabah, Malaysia Arisaema xuanweiense H.Li - Yunnan Arisaema yamatense (Nakai) Nakai - Yamatense