| Rubiaceae | ! |
Cinchona | L. | Sp. Pl. 1: 172 | 1753 |
| Rubiaceae | ! |
Cinchona calisaya | Wedd. | Ann. Sci. Nat., Bot., sér. 3, 10: 6 | 1848 |
| Rubiaceae | ! |
Cinchona pubescens | Vahl | Skr. Naturhist.-Selsk. 1: 19 | 1790 |
| Rubiaceae | |
Ladenbergia | Klotzsch | Getreue Darstell. Gew. 14(2): sub t. 15 | 1846 |
| Rubiaceae | |
Ladenbergia brenesii | Standl. | Publ. Field Mus. Nat. Hist., Bot. Ser. 18(4): 1323–1324 | 1938 |
| Rubiaceae | |
Ladenbergia dwyeri | L. Andersson | Nordic J. Bot. 17(3): 290 | 1997 |
| Rubiaceae | |
Ladenbergia heterophylla | (Wedd.) Standl. | Publ. Field Mus. Nat. Hist., Bot. Ser. 7: 18 | 1930 |
| Rubiaceae | |
Ladenbergia laurifolia | Dwyer | Ann. Missouri Bot. Gard. 67(2): 265 | 1980 |
| Rubiaceae | |
Ladenbergia macrocarpa | (Vahl) Klotzsch | Getreue Darstell. Gew. 14(2): sub t. 15 | 1846 |
| Rubiaceae | |
Ladenbergia nubigena | L. Andersson | Nordic J. Bot. 17(3): 287 | 1997 |