National Plant Data Center, NRCS, USDA. Baton Rouge, LA 70874-4490 USA. http://plants.usda.gov
Reference for:
Euphorbia pergamena
Source:
The PLANTS Database
Acquired:
2000-01-21
Notes:
National Plant Data Center, NRCS, USDA. Baton Rouge, LA 70874-4490 USA. http://plants.usda.gov
Reference for:
Euphorbia pergamena
Source:
Malpighiales of North America Update
Acquired:
2011-08-26
Notes:
Updated for ITIS by the Flora of North America Expertise Network, in connection with an update for USDA PLANTS (2007-2010)
Reference for:
Euphorbia pergamena
Source:
Euphorbia Planetary Biodiversity Inventory database
Acquired:
2016-11-01
Notes:
Riina, R. and Berry, P.E. (coordinators). 2016. Euphorbia Planetary Biodiversity Inventory database. Available from Tolkin (http://app.tolkin.org/projects/72/taxa)