Philibertella hartwegii var. heterophylla (Engelm. ex Torr.) Vail Bull. Torrey Bot. Club 24(6): 308. 1897 [29 Jun 1897]

Nomenclatural References

• literature : Bull. Torrey Bot. Club 24(6): 308. 1897 [29 Jun 1897] BHL link from IPNI metadata.
• literature : Vail, A. M. (1897). Studies in the Asclepiadaceae.-I. Bulletin of the Torrey Botanical Club, 24(6), 305. https://doi.org/10.2307/2478416 DOI link imported from Page, R. (2023). doi:10.5281/zenodo.7974720
• person : Anna Murray Vail (1863-1955) Based on occurrence of standard abbreviation 'Vail' in the authors string.
• person : George Engelmann (1809-1884) Based on occurrence of standard abbreviation 'Engelm.' in the authors string.
• person : John Torrey (1796-1873) Based on occurrence of standard abbreviation 'Torr.' in the authors string.
• database : IPNI record: 192876-2