BioStor
 | Studies of West Indian Plants - IX Nathaniel Lord Britton (1917) Bulletin of the Torrey Botanical Club 44(1): 1-37 |
 | Miscellaneous additions and revisions to the Flowering Plants of Jamaica Charles Adams (1970) Phytologia 20: 309-314 |
 | Cassia in Nicaragua F C Seymour (1973) Phytologia 27: 330-348 |