Ref ID | Type | Author | Date | Title |
26212
| Database | GBIF | 2013 | Global Biodiversity Information Facility (GBIF) Database. |
28167
| Database | Les, D.H., and R.S. Capers. | 2012 | George Safford Torrey Herbarium (CONN) |
16075
| Database | Smithsonian Institution | 2019 | United States National Herbarium (US) |
28178
| Database | The New York Botanical Garden | 2018 | William and Lynda Steere Herbarium (NY) |