| Ref ID | Type | Author | Date | Title |
|
29283
| Database | Ackerman, J. (director). | 2013 | University of Puerto Rico Herbarium (UPRRP) |
|
16045
| Database | Alexander, J., S. Markos, J. Yost, R.L. Moe, E. Dean, and M. Nazaire. | 2016 | Consortium of California Herbaria (CCH) |
|
25610
| Database | Calflora | 2021 | The Calflora Database: Information on California plants for education, research and conservation |
|
10083
| Book | Radford, A.E., H.E. Ahles, and C.R. Bell. | 1968 | Manual of the Vascular Flora of the Carolinas. |
|
29284
| Database | Santiago-Valentín, E. (director). | 2012 | Botanical Garden of the University of Puerto Rico Herbarium (UPR) |
|
10497
| Book | Thomas, R.D., and C.M. Allen. | 1993 | Atlas of the Vascular Flora of Louisiana. Vol I: Ferns and Fern Allies, Conifers, and Monocotyledons. |
|
10724
| Book | Yatskievych, G. | 1999 | Steyermark's Flora of Missouri, Vol 1. |
