Notice of release of Pineywoods Germplasm thickspike gayfeather selected class of natural germplasm

REFERENCES

1. ↵
   1. Grelen H, Duvall V

   . 1966. Common plants of longleaf pine-bluestem range. New Orleans (LA): USDA Forest Service Southern Forest Experiment Station.
2. ↵
   1. Grelen H, Hughes R

   . 1984. Common herbaceous plants of southern forest range. Research Paper SO-210. New Orleans (LA): USDA Forest Service Southern Forest Experiment Station.
3. ↵
   1. Illinois wildflowers

   . 2017. Prairie blazingstar (Liatris pycnostachya). URL: http://www.illinoiswildflowers.info/prairie/plantx/pr_blazingstarx.htm (accessed 12 Jun 2019).
4. ↵
   1. Schaal B.

   1978. Density dependent foraging on Liatris pycnostachya. Evolution 32:452–454.

   OpenUrlCrossRefWeb of Science
5. ↵
   1. [USDA ARS] USDA Agricultural Research Service

   . 2012. Plant hardiness zone map, 2012. URL: http://planthardiness.ars.usda.gov (accessed 3 May 2019).
6. ↵
   1. [USDA NRCS] USDA Natural Resources Conservation Service

   . 2006. Land resource regions and major land resource areas of the United States, the Caribbean, and the Pacific Basin. Washington (DC): U.S. Government Printing Office. Agricultural Handbook 296.
7. ↵
   1. [USDA NRCS] USDA Natural Resources Conservation Service

   . 2010. National plant materials manual. 4th ed. Washington (DC): USDA Natural Resources Conservation Service.
8. ↵
   1. [USDA NRCS] USDA Natural Resources Conservation Service

   . 2020. The PLANTS database. URL: http://plants.usda.gov (accessed Sep 2020). Greensboro (NC): National Plant Data Team.