Author

–

Year

–

Title

–

Source

John Kartesz, Biota of North America Project (BONAP), University of North Carolina

Author

–

Year

1996

Title

National Plant Data Center, NRCS, USDA. Baton Rouge, LA 70874-4490 USA. http://plants.usda.gov, database, ver. 4.0.4

Source

The PLANTS Database

Author

–

Year

2000

Title

National Plant Data Center, NRCS, USDA. Baton Rouge, LA 70874-4490 USA. http://plants.usda.gov, database, ver. 5.1.1

Source

The PLANTS Database