| Brassicaceae | |
Sophia adenophora
| Wooton & Standl. | Contr. U.S. Natl. Herb. 16(4): 127 | 1913 |
| Brassicaceae | |
Sophia andrenarum
| Cockerell | Bull. Torrey Bot. Club 28(1): 48 | 1901 |
| Brassicaceae | |
Sophia brachycarpa
| (Richardson) Rydb. | Man. Fl. N. States 462 | 1901 |
| Brassicaceae | |
Sophia brevipes
| (Nutt.) Rydb. | Bull. Torrey Bot. Club 29(4): 238 | 1902 |
| Brassicaceae | |
Sophia californica
| (Torr. & A. Gray) Rydb. | Bull. Torrey Bot. Club 29(4): 238 | 1902 |
| Brassicaceae | |
Sophia cumingiana
| (Fisch. & E. Mey.) Macloskie | Rep. Princeton Univ. Exp. Patagonia, Bot. 5: 447. | 1905 |
| Brassicaceae | |
Sophia deserticola
| (Speg.) Macloskie | Rep. Princeton Univ. Exp. Patagonia, Bot. 8: 448 | 1905 |
| Brassicaceae | |
Sophia diffusa
| (A. Gray) Tidestr. | Proc. Biol. Soc. Washington 48(9): 39 | 1935 |
| Brassicaceae | |
Sophia filipes
| (A. Gray) A. Heller | Bull. Torrey Bot. Club 24(6): 311 | 1897 |
| Brassicaceae | |
Sophia glabra
| Wooton & Standl. | Contr. U.S. Natl. Herb. 16(4): 127–128 | 1913 |
| Brassicaceae | |
Sophia glabrescens
| (Speg.) Macloskie | | |
| Brassicaceae | |
Sophia glandifera
| Osterh. | Bull. Torrey Bot. Club 53(1): 35 | 1926 |
| Brassicaceae | |
Sophia glandulifera
| Rydb. | Bull. Torrey Bot. Club 28(5): 281 | 1901 |
| Brassicaceae | |
Sophia glandulifera
| (Speg.) Macloskie | Rep. Princeton Univ. Exp. Patagonia, Bot. 5: 448. | 1905 |
| Brassicaceae | |
Sophia glaucescens
| (Phil.) Macloskie | Rep. Princeton Univ. Exp. Patagonia, Bot. 5: 448. | 1905 |
| Brassicaceae | |
Sophia gracilis
| Rydb. | Mem. New York Bot. Gard. 1: 475–476 | 1900 |
| Brassicaceae | |
Sophia halictorum
| Cockerell | Bull. Torrey Bot. Club 25(8): 460 | 1898 |
| Brassicaceae | |
Sophia hartwegiana
| (E. Fourn.) Greene | Pittonia 3(15A): 95 | 1896 |
| Brassicaceae | |
Sophia heterotricha
| (Speg.) Macloskie | Rep. Princeton Univ. Exp. Patagonia, Bot. 8: 447 | 1905 |
| Brassicaceae | |
Sophia incisa
| (Engelm. ex A. Gray) Greene | Pittonia 3(15A): 95 | 1896 |
| Brassicaceae | |
Sophia intermedia
| Rydb. | Mem. New York Bot. Gard. 1: 184–185 | 1900 |
| Brassicaceae | |
Sophia leptophylla
| Rydb. | Bull. Torrey Bot. Club 29(4): 239 | 1902 |
| Brassicaceae | |
Sophia leptostylis
| Rydb. | Bull. Torrey Bot. Club 39(7): 325–326 | 1912 |
| Brassicaceae | |
Sophia lobelii
| Rupr. | Mém. Acad. Imp. Sci. Saint Pétersbourg, Sér. 7 15(2): 88. | 1869 |
| Brassicaceae | |
Sophia longepedicellata
| (E. Fourn.) Howell | Fl. N.W. Amer. 1: 56 | 1897 |
| Brassicaceae | |
Sophia longpedicellata
| J.T. Howell | Fl. N.W. Amer. 1: 56. | 1897 |
| Brassicaceae | |
Sophia magna
| Rydb. | Bull. Torrey Bot. Club 34(8): 436 | 1907 |
| Brassicaceae | |
Sophia millefolia
| Rydb. | Man. Fl. N. States (ed. 2) 462 | 1905 |
| Brassicaceae | |
Sophia multifida
| Gilib. | | |
| Brassicaceae | |
Sophia myriophylla
| (Kunth ex DC.) Rydb. | Man. Fl. N. States 462 | 1901 |
| Brassicaceae | |
Sophia nelsonii
| Rydb. | Bull. Torrey Bot. Club 34(8): 436–437 | 1907 |
| Brassicaceae | |
Sophia obtusa
| Greene | Leafl. Bot. Observ. Crit. 1(7): 96 | 1904 |
| Brassicaceae | |
Sophia ochroleuca
| Wooton | Bull. Torrey Bot. Club 25(8): 455–456 | 1898 |
| Brassicaceae | |
Sophia paradisa
| A. Nelson & P.B. Kenn. | Proc. Biol. Soc. Washington 19(31): 155 | 1906 |
| Brassicaceae | |
Sophia parviflora
| (Lam.) Standl. | Contr. U.S. Natl. Herb. 22(5): 347 | 1921 |
| Brassicaceae | |
Sophia perplexa
| (L.F. Hend.) Rydb. | Fl. Rocky Mts. 341 | 1917 |
| Brassicaceae | |
Sophia pinnata
| (Walter) Howell | Fl. N.W. Amer. 1: 56 | 1897 |
| Brassicaceae | |
Sophia procera
| Greene | Pittonia 4(23): 199–200 | 1900 |
| Brassicaceae | |
Sophia purpurascens
| Rydb. | Bull. Torrey Bot. Club 31(10): 556 | 1904 |
| Brassicaceae | |
Sophia ramosa
| Rydb. | Bull. Torrey Bot. Club 31(10): 556 | 1904 |
| Brassicaceae | |
Sophia richardsoniana
| (Sweet) Rydb. | Brittonia 1: 89. | 1931 |
| Brassicaceae | |
Sophia richardsonii
| Rydb. | Brittonia 1(2): 89 | 1931 |
| Brassicaceae | |
Sophia sagittata
| (Hook. & Arn.) Macloskie | Rep. Princeton Univ. Exp. Patagonia, Bot. 5: 450. | 1905 |
| Brassicaceae | |
Sophia serrata
| Greene | Leafl. Bot. Observ. Crit. 1(7): 96 | 1904 |
| Brassicaceae | |
Sophia sonnei
| (B.L. Rob.) Greene | Pittonia 3(15A): 95 | 1896 |
| Brassicaceae | * |
Sophia sophia
| (L.) Britton | Ill. Fl. N. U.S. 2: 144 | 1897 |
| Brassicaceae | |
Sophia sophioides
| (Fisch. ex Hook.) A. Heller | Cat. N. Amer. Pl. (ed. 2) 4 | 1900 |
| Brassicaceae | |
Sophia subscandens
| (Speg.) Macloskie | | ** |
| Brassicaceae | |
Sophia tanacetifolium
| L. | | |
| Brassicaceae | |
Sophia tenuissima
| (Phil.) Macloskie | Rep. Princeton Univ. Exp. Patagonia, Bot. 8: 450 | 1905 |
| Brassicaceae | |
Sophia viscosa
| Rydb. | Bull. Torrey Bot. Club 29(4): 238–239 | 1902 |