National Plant Data Center, NRCS, USDA. Baton Rouge, LA 70874-4490 USA. http://plants.usda.gov
Reference for:
Petalonyx
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:
Petalonyx
Source:
Jepson online interchange, 2007 - 2011
Acquired:
2011-01-01
Notes:
The Jepson online interface, botanical information system from the University of California, Berkeley, available at http://ucjeps.berkeley.edu/interchange.html
Reference for:
Petalonyx
Source:
Loasaceae of North America Update
Acquired:
2011-01-01
Notes:
Updated for ITIS by the Flora of North America Expertise Network, in connection with an update for USDA PLANTS (2007-2010)