Nomenclature: wfo-0001397599

Zizia aptera var. occidentalis Rhodora 41: 444. 1939
Nomenclatural References
- literature : Rhodora 41: 444. 1939 BHL link from IPNI metadata.
- person : Merritt Lyndon Fernald (1873-1950) Based on occurrence of standard abbreviation 'Fernald' in the authors string.
- database : IPNI record: 271188-2