| Euphorbiaceae | |
Euphorbia aaron-rossii
| A.H. Holmgren & N.H. Holmgren | Brittonia 40: 357 | 1988 |
| Euphorbiaceae | |
Euphorbia abbottii
| Baker | Bull. Misc. Inform. Kew 1894: 150 | 1894 |
| Euphorbiaceae | * |
Euphorbia abbreviata
| Correll | Sida 8: 317 | 1980 |
| Euphorbiaceae | |
Euphorbia abbreviata
| Thuill. | Fl. Env. Paris (ed. 2) 239 | 1799 |
| Euphorbiaceae | |
Euphorbia abchazica
| Woronow | Vestn. Tbilissk. Bot. Sada 22: 3 | 1912 |
| Euphorbiaceae | |
Euphorbia abdelkuri
| Balf. f. | Rep. Brit. Ass. Glasgow 854 | 1901 |
| Euphorbiaceae | |
Euphorbia abdita
| (D.G. Burch) Radcl.-Sm. | Kew Bull. 25: 172 | 1971 |
| Euphorbiaceae | |
Euphorbia abdulghafooriana
| Abedin | Pakistan J. Bot. 37: 31 | 2005 |
| Euphorbiaceae | |
Euphorbia abortiva
| Porta | Atti Imp. Regia Accad. Rovereto 9: 67 | 1891 [1892] |
| Euphorbiaceae | |
Euphorbia abortiva
| Forssk. | Fl. Aegypt.-Arab. cxii | 1775 |
| Euphorbiaceae | |
Euphorbia abramsiana
| L.C. Wheeler | Bull. S. Calif. Acad. Sci. 33(2): 109–110 | 1934 |
| Euphorbiaceae | |
Euphorbia abyssinica
| J.F. Gmel. | Syst. Nat., ed. 13[bis] 759 | 1791 |
| Euphorbiaceae | |
Euphorbia acalyphoides
| Hochst. ex Boiss. | Prodr. 15(2): 98 | 1862 |
| Euphorbiaceae | |
Euphorbia acanthodes
| Akhani | Bot. J. Linn. Soc. 146: 108 | 2004 |
| Euphorbiaceae | |
Euphorbia acanthothamnos
| Heldr. & Sartori | Diagn. Pl. Orient., ser. 2, 4: 86 | 1859 |
| Euphorbiaceae | |
Euphorbia acaulis
| Roxb. | Fl. Ind. 2: 472 | 1832 |
| Euphorbiaceae | |
Euphorbia acerensis
| Boiss. | Prodr. 15(2): 55 | 1862 |
| Euphorbiaceae | |
Euphorbia acervata
| S. Carter | Kew Bull. 54: 962 | 1999 [2000] |
| Euphorbiaceae | |
Euphorbia achanocarpa
| Guss. ex Spreng. | Syst. Veg. [Sprengel] 3: 797 | 1826 |
| Euphorbiaceae | |
Euphorbia acrurensis
| N.E. Br. | Fl. Trop. Afr. 6(1): 595 | 1912 |
| Euphorbiaceae | |
Euphorbia actinoclada
| S. Carter | Hooker's Icon. Pl. 39: t. 3851 | 1982 |
| Euphorbiaceae | |
Euphorbia aculeata
| E. Mey. | Zwei Pflanzengeogr. Dokum. 184 | 1843 |
| Euphorbiaceae | |
Euphorbia aculeata
| Forssk. | Fl. Aegypt.-Arab. 94 | 1775 |
| Euphorbiaceae | |
Euphorbia acuminata
| Lam. | Encycl. 2: 426 | 1788 |
| Euphorbiaceae | |
Euphorbia acuta
| Bellard ex A. Colla | Herb. Pedem. 5: 132 | 1836 |
| Euphorbiaceae | !! |
Euphorbia acuta
| Engelm. | Rep. U.S. Mex. Bound. 2(1): 189 | 1859 |
| Euphorbiaceae | |
Euphorbia acutifolia
| (Boiss.) Rech. f. | Fl. Aegaea 114 | 1943 |
| Euphorbiaceae | |
Euphorbia acymoidea
| L. | | |
| Euphorbiaceae | |
Euphorbia adenensis
| Deflers | Bull. Soc. Bot. France 34: 67 | 1887 |
| Euphorbiaceae | |
Euphorbia adenochila
| S. Carter | Kew Bull. 45: 656 | 1990 |
| Euphorbiaceae | |
Euphorbia adenochlora
| C. Morren & Decne. | Bull. Acad. Roy. Sci. Bruxelles 3: 174 | 1836 |
| Euphorbiaceae | |
Euphorbia adenophylla
| Steud. | Nomencl. Bot. (ed. 2) 1: 609 | 1840 |
| Euphorbiaceae | * |
Euphorbia adenophylla
| Donn. Sm. | Bot. Gaz. 47(4): 261 | 1909 |
| Euphorbiaceae | |
Euphorbia adenoplicata
| O.L.M. Silva & Cordeiro | Syst. Bot. 45(1): 131–135, f. 2–3 | 2020 |
| Euphorbiaceae | |
Euphorbia adenopoda
| Baill. | Adansonia 1: 141 | 1861 |
| Euphorbiaceae | |
Euphorbia adenoptera
| Bertol. | Misc. Bot. 3: 20 | 1844 |
| Euphorbiaceae | ** |
Euphorbia adhaerens
| (Small) Jabl. | Phytologia 28: 123 | 1974 |
| Euphorbiaceae | |
Euphorbia adiantoides
| Lam. | Encycl. 2: 426 | 1788 |
| Euphorbiaceae | |
Euphorbia adinophylla
| Donn. Sm. | Bot. Gaz. 47: 261 | 1909 |
| Euphorbiaceae | |
Euphorbia adjurana
| P.R.O. Bally & S. Carter | Hooker's Icon. Pl. 39: t.3857 | 1982 |
| Euphorbiaceae | |
Euphorbia aegyptiaca
| Boiss. | Cent. Euphorb. 13 | 1860 |
| Euphorbiaceae | |
Euphorbia aellenii
| Rech. f. | Österr. Akad. Wiss., Math.-Naturwiss. Kl. Anz. 88: 220 | 1951 |
| Euphorbiaceae | |
Euphorbia aequoris
| N.E. Br. | Fl. Cap. 5(2): 279 | 1915 |
| Euphorbiaceae | |
Euphorbia aeruginosa
| Schweick. | Bull. Misc. Inform. Kew 1935: 205 | 1935 |
| Euphorbiaceae | |
Euphorbia aethiopum
| Croizat | J. Jap. Bot. 17: 575 | 1941 |
| Euphorbiaceae | |
Euphorbia affinis
| DC. | Fl. Franç. 6: 363 | 1815 |
| Euphorbiaceae | ** |
Euphorbia affinis
| Boiss. | Cent. Euphorb. 12 | 1860 |
| Euphorbiaceae | |
Euphorbia afzelii
| N.E. Br. | Fl. Trop. Afr. 6(1.3): 506–507 | 1913 [1911] |
| Euphorbiaceae | ! |
Euphorbia agatheae
| Haev. & Hett. | Phytotaxa 492(1): 1-61 | 2021 |
| Euphorbiaceae | |
Euphorbia aggregata
| A. Berger | Sukkul. Euphorb. 92 | 1907 [1906] |
| Euphorbiaceae | |
Euphorbia agowensis
| Hochst. ex Boiss. | Prodr. 15(2): 70 | 1862 |
| Euphorbiaceae | |
Euphorbia agraria
| M. Bieb. | Fl. Taur.-Caucas. 1: 375 | 1808 |
| Euphorbiaceae | |
Euphorbia akdaghensis
| Stapf | Denkschr. Kaiserl. Akad. Wiss., Wien Math.-Naturwiss. Kl. 51: 24 | 1886 |
| Euphorbiaceae | ** |
Euphorbia akenocarpa
| Roux & Blaise ex Boiss. | Prodr. 15(2): | 1862 |
| Euphorbiaceae | |
Euphorbia akenocarpa
| Guss. | Adnot. Cat. Pl. Boccad. 7 | 1821 |
| Euphorbiaceae | |
Euphorbia alaica
| (Prokh.) Prokh. | Fl. SSSR 14: 388 | 1949 |
| Euphorbiaceae | |
Euphorbia alainii
| Oudejans | Phytologia 67: 44 | 1989 |
| Euphorbiaceae | |
Euphorbia alata
| Hook. | Hooker's Icon. Pl. 7: pl. 700 | 1844 |
| Euphorbiaceae | |
Euphorbia alatavica
| Boiss. | Cent. Euphorb. 33 | 1860 |
| Euphorbiaceae | |
Euphorbia alatocaulis
| V.W. Steinm. & Felger | Aliso 16: 37 | 1997 |
| Euphorbiaceae | |
Euphorbia albanica
| N.E. Br. | Fl. Cap. 5(2): 258 | 1915 |
| Euphorbiaceae | |
Euphorbia albertensis
| N.E. Br. | Fl. Cap. 5(2): 323 | 1915 |
| Euphorbiaceae | |
Euphorbia albicaulis
| Rydb. | Mem. New York Bot. Gard. 1: 266 | 1900 |
| Euphorbiaceae | |
Euphorbia albiflora
| Taub. | Bot. Jahrb. Syst. 21: 442 | 1896 |
| Euphorbiaceae | |
Euphorbia albipollinifera
| L.C. Leach | S. African J. Bot. 51: 281 | 1985 |
| Euphorbiaceae | |
Euphorbia albomarginata
| Torr. & A. Gray | Pacif. Railr. Rep. 2(4): 174–175 | 1855 [1857] |
| Euphorbiaceae | |
Euphorbia albovillosa
| Pax | Bot. Jahrb. Syst. 34: 373 | 1905 |
| Euphorbiaceae | * |
Euphorbia alcicornis
| Poiss. | Rech. Fl. Mérid. Madagascar 39 | 1912 |
| Euphorbiaceae | ! |
Euphorbia alcicornis
| Baker | J. Linn. Soc., Bot. 22: 517 | 1887 |
| Euphorbiaceae | |
Euphorbia aleppica
| L. | Sp. Pl. 458 | 1753 |
| Euphorbiaceae | |
Euphorbia alexandrina
| Delile | Descr. Égypte, Hist. Nat. 234 | 1813 |
| Euphorbiaceae | |
Euphorbia alfredii
| Rauh | Cact. Succ. J. (Los Angeles) 59(5): 209 | 1987 |
| Euphorbiaceae | |
Euphorbia algeriensis
| Boiss. | Diagn. Pl. Orient., ser. 2, 4: 85 | 1859 |
| Euphorbiaceae | |
Euphorbia aliciae
| A. Nelson | Bot. Gaz. 42(1): 50 | 1906 |
| Euphorbiaceae | |
Euphorbia allocarpa
| S. Carter | Kew Bull. 39: 644, f. 1/J–L | 1984 |
| Euphorbiaceae | |
Euphorbia alluaudii
| Drake | Bull. Mus. Hist. Nat. (Paris) 9: 43–44 | 1903 |
| Euphorbiaceae | |
Euphorbia alpigena
| A. Kern. | Oesterr. Bot. Z. 16: 337 | 1866 |
| Euphorbiaceae | |
Euphorbia alpina
| C.A. Mey. ex Ledeb. | Icon. Pl. [Ledebour] 2: 26 | 1830 |
| Euphorbiaceae | |
Euphorbia alsinaeflora
| Baill. | A.T.L.A. 6: 288 | 1866 |
| Euphorbiaceae | |
Euphorbia alsiniflora
| Baill. | Adansonia 6: 288 | 1866 |
| Euphorbiaceae | |
Euphorbia alsinifolia
| Boiss. | Cent. Euphorb. 16 | 1860 |
| Euphorbiaceae | |
Euphorbia alsinoides
| Miq. | Linnaea 26: 222 | 1853 [1854] |
| Euphorbiaceae | |
Euphorbia alta
| Norton | N. Amer. Euphorbia 24, pl. 24 | 1899 |
| Euphorbiaceae | |
Euphorbia altaica
| C.A. Mey. ex Ledeb. | Icon. Pl. [Ledebour] 2: , t. 191 | 1830 |
| Euphorbiaceae | * |
Euphorbia altaica
| C.A. Mey. | Fl. Altaic. 4: 190–191 | 1833 |
| Euphorbiaceae | |
Euphorbia alternicola
| N.E. Br. | Fl. Cap. 5(2): 344 | 1915 |
| Euphorbiaceae | |
Euphorbia alternicolor
| N.E. Br. | Fl. Cap. 5(2): 344 | 1915 |
| Euphorbiaceae | |
Euphorbia altissima
| Boiss. | Diagn. Pl. Orient., ser. 1, 5: 52 | 1844 |
| Euphorbiaceae | |
Euphorbia altotibetica
| Paulsen | S. Tibet, Bot. 6(3): 56 | 1922 |
| Euphorbiaceae | |
Euphorbia amandi
| Oudejans | Phytologia 67: 44 | 1989 |
| Euphorbiaceae | |
Euphorbia amarifontana
| N.E. Br. | Fl. Cap. 5(2): 275 | 1915 |
| Euphorbiaceae | |
Euphorbia ambacensis
| N.E. Br. | Fl. Trop. Afr. 6(1): 1041 | 1913 |
| Euphorbiaceae | |
Euphorbia ambarivatoensis
| Rauh & Bard.-Vauc. | Succulentes 22(3): 4, 6–8 | 1999 |
| Euphorbiaceae | |
Euphorbia ambatofinandranae
| Leandri | Adansonia, n.s. 6: 344 | 1966 |
| Euphorbiaceae | |
Euphorbia ambatomenahensis
| Rebmann | Cact. Succ. 5(1): 4 | 2013 |
| Euphorbiaceae | |
Euphorbia ambigua
| Waldst. & Kit. ex Willd. | Sp. Pl. 2: 910 | 1799 |
| Euphorbiaceae | |
Euphorbia × ambohipotsiensis
| Ursch & Leandri | Mém. Inst. Sci. Madagascar, Sér. B, Biol. Vég. 5: 180 | 1954 |
| Euphorbiaceae | |
Euphorbia ambovombensis
| Rauh & Razaf. | Cact. Succ. J. (Los Angeles) 59(6): 251 | 1987 |
| Euphorbiaceae | |
Euphorbia ambroseae
| L.C. Leach | Kirkia 4: 15 | 1964 |
| Euphorbiaceae | |
Euphorbia ambukensis
| Stepanov | Florogenet. Analiz 1: 83 | 1994 |