Dolichandra unguis-cati (L.) L.G. Lohmann, Nuevo Cat. Fl. Vasc. Venezuela: 273. 2008 sec. Martínez & Ramos 2012
- ≡Bignonia unguis-cati L., Sp. Pl. 2: 623. 1753 syn. sec. Martínez & Ramos 2012
- =Bignonia exoleta Vell., Fl. Flumin.: 248. 1829 ["1825"] syn. sec. ???
- =Bignonia pseudounguis Desf., Tabl. École Bot. (ed. 3): 397. 1829 syn. sec. ???
- =Bignonia gracilis Lodd., Bot. Cab.: t. 1705. 1831 syn. sec. ???
- =Batocydia exoleta (Vell.) C. Mart. ex DC., Prodr. 9: 148. 1845 syn. sec. ???
- =Batocydia unguis (L. ex DC.) Mart. ex DC., Prodr. 9: 146. 1845 syn. sec. ???
- =Bignonia unguis L. ex DC., Prodr. 9: 146. 1845 syn. sec. ???
- =Bignonia unguis var. gracilis (Lodd.) DC., Prodr. 9: 146. 1845 syn. sec. ???
- =Bignonia acutistipula Schltdl. in Linnaea 26: 375. 1854 ["1853"] syn. sec. ???
- =Doxantha acutistipula (Schltdl.) Miers in Proc. Roy. Hort. Soc. London 3: 190. 1863 syn. sec. ???
- =Doxantha adunca Miers in Proc. Roy. Hort. Soc. London 3: 188. 1863 syn. sec. ???
- =Doxantha exoleta (Vell.) Miers in Proc. Roy. Hort. Soc. London 3: 188. 1863 syn. sec. ???
- =Doxantha lanuginosa Miers in Proc. Roy. Hort. Soc. London 3: 190. 1863 syn. sec. Martínez & Ramos 2012
- =Doxantha mexicana Miers in Proc. Roy. Hort. Soc. London 3: 190. 1863 syn. sec. ???
- =Doxantha praesignis Miers in Proc. Roy. Hort. Soc. London 3: 190. 1863 syn. sec. Martínez & Ramos 2012
- =Doxantha serrulata Miers in Proc. Roy. Hort. Soc. London 3: 190. 1863 syn. sec. Martínez & Ramos 2012
- =Doxantha tenuicula Miers in Proc. Roy. Hort. Soc. London 3: 190. 1863 syn. sec. Martínez & Ramos 2012
- =Doxantha unguis (L.) Miers in Proc. Roy. Hort. Soc. London 3: 190. 1863 syn. sec. ???
- =Doxantha unguis-cati (L.) Miers in Proc. Roy. Hort. Soc. London 3: 190. 1863 syn. sec. ???
- =Bignonia inflata Griseb. in Abh. Königl. Ges. Wiss. Göttingen 24: 256. 1879 syn. sec. ???
- =Bignonia lanuginosa Hemsl., Biol. Cent.-Amer., Bot. 2(12): 491. 1882 syn. sec. Martínez & Ramos 2012
- =Bignonia unguis-cati var. guatemalensis K. Schum. & Loes. in Bot. Jahrb. Syst. 23: 130. 1896 syn. sec. Martínez & Ramos 2012
- =Bignonia unguis-cati var. serrata Bureau & K. Schum., Fl. Bras. 8(2): 283. 1896 syn. sec. ???
- =Bignonia californica Brandegee in Zoë 5(9): 170. 1903 syn. sec. ???
- =Bignonia unguis-cati var. exoleta (Vell.) Sprague in Bull. Herb. Boissier II, 5: 84. 1905 syn. sec. ???
- =Bignonia dasyonyx S.F. Blake in Contr. Gray Herb. 52: 93–94. 1917 syn. sec. Martínez & Ramos 2012
- =Doxantha dasyonyx (S.F. Blake) S.F. Blake in J. Bot. 61: 192. 1923 syn. sec. ???
- =Doxantha unguis-cati var. dasyonyx (S.F. Blake) Seibert in Publ. Carnegie Inst. Wash. 522: 422. 1940 syn. sec. ???
- =Bignonia tweediana Griseb. ex Fabris in Revista Mus. La Plata 9(43): 396. 1965 syn. sec. ???
- =Doxantha unguis-cati var. exoleta (Vell.) Fabris in Revista Mus. La Plata, Secc. Bot. 9(43): 394. 1965 syn. sec. ???
- =Macfadyena unguis-cati (L.) A.H. Gentry in Brittonia 25(3): 236. 1973 syn. sec. Martínez & Ramos 2012