Shakkai's Daylilies
Species (first named) Ploidy Flowering Time Flowering Season Native Range Notes
Hemerocallis altissima (Stout, 1943) DIP Noc M-La South-West China (Purple Mountains near Nanking) ? Some lists as Syn. Of H. citrina
Hemerocallis aurantiaca (Baker, 1890) DIP? Diu EM South China ? Some lists as var. of H. fulva
Hemerocallis citrina (Baroni, 1897) DIP Noc M-MLa China: China - Anhui, Hebei, Hunan, Jiangsu, Jiangxi, Nei Monggol, Shaanxi, Shandong, Sichuan, Zhejiang
Hemerocallis citrina var. citrina as above as above as above
Hemerocallis citrina var. vespertina (H. Hara) M. Hotta, 1966 DIP Noc M-MLa Eastern Asia: Japan - Honshu, Kyushu, Shikoku ? Some list as Syn. Of Hemerocallis thunbergii Barr
Hemerocallis darrowiana (S. Y. Hu, 1969) DIP Diu M-MLa Soviet Far East: Russian Federation - Sakhalin
Hemerocallis dumortieri (C. Morren, 1934) DIP Diu EE Siberia: Russian Federation - Chita; Soviet Far East: Russian Federation - Amur, Khabarovsk; China: China - Jilin; Eastern Asia: Japan - Hokkaido, Honshu
Hemerocallis esculenta (Koidzumi, 1925) DIP Diu EM Soviet Far East: Russian Federation - Kurile Islands [s.], Sakhalin; China: China - Gansu, Hebei, Henan, Hubei, Liaoning, Ningxia, Shaanxi, Shandong, Shanxi; Eastern Asia: Japan - Hokkaido, Honshu
Hemerocallis exaltata (Stout, 1934) DIP Diu EM-M Eastern Asia: Japan - Honshu [Tobi Shima & Sado Islands] ? Some list as Syn. Of Hemerocallis middendorffii var. exaltata (Stout) M.Hotta
Hemerocallis forrestii (Diels, 1912) DIP Diu EM China: China - Sichuan [s.w.], Yunnan [n.w.]
Hemerocallis fulva (L.) L. see below see below see below
Hemerocallis fulva var. angustifolia Baker Eastern Asia: Japan; cultivated in China & India
Hemerocallis fulva var. fulva Diu EM China: China - Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hebei, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Shaanxi, Shandong, Shanxi, Sichuan, Xizang, Yunnan, Zhejiang; cultivated elsewhere ? Some 'lump' the following as Syns of var.fulva: Hemerocallis fulva var. kwanso Regel, Gartenflora 15: 66 (1866). Hemerocallis kwanso (Regel) Barr, Garden (London 1871-1927) 4: 132 (1873). Hemerocallis disticha var. kwanso (Regel) Nakai, Bot. Mag. (Tokyo) 38: 179 (1924). Hemerocallis fulva f. kwanso (Regel) Kitam., Acta Phytotax. Geobot. 22: 69 (1966). Hemerocallis fulva var. maculata Baroni, Nouv. Giorn. Bot. Ital. 2: 306 (1897). Hemerocallis maculata (Baroni) Nakai, Bull. Natl. Sci. Mus. Tokyo 31: 146 (1952). Hemerocallis fulva f. variegata Makino, J. Jap. Bot. 6: 30 (1929). Hemerocallis fulva var. rosea Stout, Addisonia 15: t. 484 (1930). Hemerocallis fulva var. oppositibracteata H.Kong & Ching J.Wang, Guihaia 16: 303 (1996).
Hemerocallis fulva var. kwanso Regel cultivated in e. Asia, probable origin China
Hemerocallis fulva var. littorea (Makino) M. Matsuoka & M. Hotta Eastern Asia: Japan - Honshu, Kyushu, Shikoku ? Some list this as Hemerocallis littorea Makino, J. Jap. Bot. 6: 113 (1929).
Hemerocallis fulva var. maculata Baroni Trip only cultivated, probable origin Shaanxi, China ? Syn. Of Hemerocallis fulva var. fulva
Hemerocallis fulva var. pauciflora M. Hotta & M. Matsuoka Trip Eastern Asia: Japan - Kyoto ? Syn. Of Hemerocallis fulva var. angustifolia Baker
Hemerocallis fulva var. sempervirens M. Hotta & M. Matsuoka cultivated in s. Japan ? Syn. Of Hemerocallis fulva var. angustifolia Baker
Hemerocallis hakuunensis (Nakai, 1943) DIP Diu M Eastern Asia: Korea
Hemerocallis hongdoensis (M. G. Chung & S. S. Kang. 1994) DIP Diu M Eastern Asia: Japan - Kyushu [Tsushima Island]; Korea [Hong, Taehuksan, Sohuksan, & Seop Islands]
Hemerocallis lilioasphodelus L. DIP Noc, ext E-EM Caucasus: Armenia; Siberia: Russian Federation - Eastern Siberia, Western Siberia; Soviet Far East: Russian Federation - Amur, Primorye; Mongolia: Mongolia [East Mongolia];
China: China - Gansu, Hebei, Heilongjiang, Henan, Jiangsu, Jiangxi, Jilin, Liaoning, Shaanxi, Shandong, Shanxi; Southeastern Europe: Italy [n.e.]; Slovenia
Hemerocallis middendorffii (Trautvetter & C. A. Meyer 1865) see below see below see below
Hemerocallis middendorffii var. longibracteata Z. T. Xiong China: China - Jilin [e.]
Hemerocallis middendorffii var. middendorffi DIP Diu EE Soviet Far East: Russian Federation - Amur, Khabarovsk, Kurile Islands, Primorye, Sakhalin; China: China - Heilongjiang, Jilin, Liaoning; Eastern Asia: Japan - Hokkaido; Korea

Hemerocallis minor (Miller, 1768) DIP Diu, ext. EE-E Siberia: Russian Federation - Buryatia, Chita, Gorno-Altay, Kemerovo, Khakassia, Krasnoyarsk, Tomsk, Tuva; Soviet Far East: Russian Federation - Amur, Khabarovsk; Mongolia: Mongolia [Khubsugul, Khentei, Khangai, Mongol-Daurian, Great Khingan, & East Mongolia]; China: China - Gansu, Hebei, Heilongjiang, Jilin, Liaoning, Nei Monggol, Shaanxi, Shandong, Shanxi; Eastern Asia: Korea [n.]
Hemerocallis multiflora (Stout, 1929) DIP Diu M-MLa China: China - Henan
Hemerocallis nana (W. W. Smith & Forrest, 1916) DIP Diu E China: China - Yunnan [n.w.]
Hemerocallis plicata (Stapf, 1923) DIP? Diu E? China: China - Sichuan, Yunnan
Hemerocallis taeanensis (S. S. Kang & M. G. Chung, 1997) DIP? Diu EM Eastern Asia: Korea [Anmyeon Island]
Hemerocallis thunbergii (Barr emend. Baker, 1890) DIP Noc, ext. M-MLa Eastern Asia: Korea [c. & s.w.]
Hemerocallis yezoensis (H. Hara, 1938) DIP Diu ? Soviet Far East: Russian Federation - Far East; Eastern Asia: Japan - Hokkaido
I have begun to try to compare some of the species based on their ability (perceived and/or practical) to interbreed. The most likely factors involved in this would be ploidy of the plant, flowering habit, season of flower, and physical distribution. The table below compares these traits.