Canada | | | Sánchez-González, J. | 2010 | Gentianaceae. En: Manual de Plantas de Costa Rica. Vol. V. B.E. Hammel, M.H. Grayum, C. Herrera & N. Zamora (eds.) | Monogr. Syst. Bot. Missouri Bot. Gard. | 119: 821–840 |
Canada | British Columbia | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
Caribbean | | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
Caribbean | Bahama Archipelago | | Sánchez-González, J. | 2010 | Gentianaceae. En: Manual de Plantas de Costa Rica. Vol. V. B.E. Hammel, M.H. Grayum, C. Herrera & N. Zamora (eds.) | Monogr. Syst. Bot. Missouri Bot. Gard. | 119: 821–840 |
Caribbean | Cuba | | Sánchez-González, J. | 2010 | Gentianaceae. En: Manual de Plantas de Costa Rica. Vol. V. B.E. Hammel, M.H. Grayum, C. Herrera & N. Zamora (eds.) | Monogr. Syst. Bot. Missouri Bot. Gard. | 119: 821–840 |
Colombia | | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
Costa Rica | | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
Costa Rica | | | Sánchez-González, J. | 2010 | Gentianaceae. En: Manual de Plantas de Costa Rica. Vol. V. B.E. Hammel, M.H. Grayum, C. Herrera & N. Zamora (eds.) | Monogr. Syst. Bot. Missouri Bot. Gard. | 119: 821–840 |
Ecuador | | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
El Salvador | | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
Guatemala | | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
Guyana | | | Sánchez-González, J. | 2010 | Gentianaceae. En: Manual de Plantas de Costa Rica. Vol. V. B.E. Hammel, M.H. Grayum, C. Herrera & N. Zamora (eds.) | Monogr. Syst. Bot. Missouri Bot. Gard. | 119: 821–840 |
Honduras | | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
Mexico | | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
Mexico | | | Villaseñor Ríos, J. L. | 2016 | Checklist of the native vascular plants of Mexico. Catálogo de las plantas vasculares nativas de México. | Revista Mex. Biodivers. | 87(3): 559–902 |
Nicaragua | | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
Panama | | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
Peru | | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
Peru | | | Sánchez-González, J. | 2010 | Gentianaceae. En: Manual de Plantas de Costa Rica. Vol. V. B.E. Hammel, M.H. Grayum, C. Herrera & N. Zamora (eds.) | Monogr. Syst. Bot. Missouri Bot. Gard. | 119: 821–840 |
United States | Arizona | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
United States | Arkansas | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
United States | California | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
United States | Colorado | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
United States | Idaho | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
United States | Kansas | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
United States | Louisiana | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
United States | Mississippi | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
United States | Montana | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
United States | Nebraska | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
United States | Nevada | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
United States | New Mexico | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
United States | Oklahoma | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
United States | Oregon | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
United States | Texas | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
United States | Utah | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
United States | Washington | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
United States | Wyoming | | Mansion, G. | 2004 | A new classification of the polyphyletic genus Centaurium Hill (Chironiinae, Gentianaceae): Description of the New World endemic Zeltnera, and reinstatement of Gyrandra Griseb. and Schenkia Griseb. | Taxon | 53(3): 719–740 |
Venezuela | | | Sánchez-González, J. | 2010 | Gentianaceae. En: Manual de Plantas de Costa Rica. Vol. V. B.E. Hammel, M.H. Grayum, C. Herrera & N. Zamora (eds.) | Monogr. Syst. Bot. Missouri Bot. Gard. | 119: 821–840 |