Revision of Opuntia humifusa complex

On opuntiads.com "Taxonomic revision of the Opuntia humifusa complex (Opuntieae: Cactaceae) of the eastern United States" is freely downloadable:
https://opuntiads.com/records/Taxonomic%20revision%20of%20the%20Opuntia%20humifusa%20complex%20in%20eastern%20usa.pdf

Other precious resources can be found in the opuntiads website:
https://opuntiads.com

Publicado el 20 de noviembre de 2017 por blue_celery