| Orchidaceae | |
Arethusa alaris
| Raeusch. | Nomencl. Bot. (ed. 3) 262 | |
| Orchidaceae | |
Arethusa alata
| Poir. | Encycl. Suppl. 1: 443 | 1810 |
| Orchidaceae | |
Arethusa bengalensis
| Hemsl. | J. Linn. Soc., Bot. 20: 311 | 1884 |
| Orchidaceae | |
Arethusa biplumata
| L. f. | Suppl. Pl. 405 | 1781 [1782] |
| Orchidaceae | |
Arethusa bulbosa
| L. | Sp. Pl. 2: 950 | 1753 |
| Orchidaceae | |
Arethusa burmanni
| L. ex B.D. Jacks. | Index Linn. Herb. 37 | 1912 |
| Orchidaceae | |
Arethusa capensis
| L. | Pl. Rar. Afr. 28 | 1760 |
| Orchidaceae | |
Arethusa catenata
| Sm. | Exot. Bot. 2: 89 | 1806 |
| Orchidaceae | |
Arethusa ciliaris
| L. f. | Suppl. Pl. 405 | 1781 [1782] |
| Orchidaceae | |
Arethusa cordata
| Poir. | Encycl. Suppl. 1: 444 | 1810 |
| Orchidaceae | |
Arethusa crispa
| Thunb. | Prodr. Pl. Cap. 3 | 1794 |
| Orchidaceae | |
Arethusa cucullata
| (Labill.) Poir. | Encycl. Suppl. 1: 444 | 1810 |
| Orchidaceae | |
Arethusa divaricata
| L. | Sp. Pl. 2: 951 | 1753 |
| Orchidaceae | |
Arethusa ecristata
| Griff. | Not. Pl. Asiat. 3: 378, pl. 343 & 344 | 1851 |
| Orchidaceae | |
Arethusa foliosa
| Walter | Fl. Carol. 222 | 1788 |
| Orchidaceae | |
Arethusa gentianoides
| (Sw.) Sw. | Fl. Ind. Occid. 3: 1436 | 1806 |
| Orchidaceae | |
Arethusa glutinosa
| Blanco | Fl. Filip. 641 | 1877 |
| Orchidaceae | |
Arethusa grandiflora
| S. Watson | Proc. Amer. Acad. Arts 26: 154 | 1891 |
| Orchidaceae | |
Arethusa japonica
| A. Gray | Mem. Amer. Acad. Arts 6 | 1858 |
| Orchidaceae | |
Arethusa lutea
| Gaudich. | Ann. Sci. Nat. (Paris) 5: 101 | 1825 |
| Orchidaceae | |
Arethusa medeoloides
| Pursh | Fl. Amer. Sept. 2: 591 | 1814 [1813] |
| Orchidaceae | |
Arethusa ophioglossoides
| L. | Sp. Pl. 2: 951 | 1753 |
| Orchidaceae | |
Arethusa parviflora
| Michx. | Fl. Bor.-Amer. 2: 160 | 1803 |
| Orchidaceae | * |
Arethusa pendula
| Willd. | Sp. Pl. 4: 82 | 1805 |
| Orchidaceae | * |
Arethusa petraea
| Afzel. ex Sw. | Kongl. Vetensk. Acad. Handl. 21: 230 | 1800 |
| Orchidaceae | |
Arethusa petraea
| Afzel. ex Pers. | Syn. Pl. 2: 512 | 1807 |
| Orchidaceae | |
Arethusa petraea
| Afzel. ex Sw. | Neues J. Bot. 1(1): 62 | 1805 |
| Orchidaceae | ** |
Arethusa picta
| A. Anderson | Trans. Soc. London Encour. Arts 25: 199 | 1807 |
| Orchidaceae | |
Arethusa plicata
| Andrews | Bot. Repos. 5: 321 | 1803 |
| Orchidaceae | |
Arethusa racemosa
| Walter | Fl. Carol. 222 | 1788 |
| Orchidaceae | |
Arethusa reflexa
| (Labill.) Wikstr. | Adnot. Bot. 51 | 1829 |
| Orchidaceae | ! |
Arethusa rosea
| (Lindl.) Benth. ex Hemsl. | Biol. Cent.-Amer., Bot. 3: 304 | 1884 |
| Orchidaceae | ** |
Arethusa rosea
| (Lindl.) Benth. | J. Linn. Soc., Bot. 18: 348 | 1881 |
| Orchidaceae | |
Arethusa secunda
| Thunb. | Prodr. Pl. Cap. 3 | 1794 |
| Orchidaceae | ** |
Arethusa simplex
| Thouars | Hist. Orchid. , pl. 24 | 1822 |
| Orchidaceae | |
Arethusa sinensis
| Rolfe | J. Linn. Soc., Bot. 36(249): 46–47 | 1903 |
| Orchidaceae | |
Arethusa spicata
| Walter | Fl. Carol. 222–223 | 1788 |
| Orchidaceae | |
Arethusa tetrapetala
| R. Br. ex Britten | Ill. Bot. Cook Voy 94, t. 302B | 1909 |
| Orchidaceae | |
Arethusa tigridiifolia
| Lex. | Nov. Veg. Descr. 2(Orch. Opusc.): 14 | 1825 |
| Orchidaceae | |
Arethusa trianthophoros
| Sw. | Kongl. Svenska Vetensk. Acad. Handl. 21: 230 | 1800 |
| Orchidaceae | |
Arethusa verticillata
| Muhl. ex Willd. | Sp. Pl. 4(1): 81 | 1805 |
| Orchidaceae | |
Arethusa villosa
| L. f. | Suppl. Pl. 405 | 1781 [1782] |