| BAIL | Bailey, L.H. and E.Z. Bailey, Hortus Third: A Concise Dictionary of Plants Cultivated in the United States and Canada, MacMillan Publishing Co., Inc., New York , (1977). |
| GRIN | Agricultural Research Service, Germplasm Resources Information Network |
| HICK | Hickman, J.C., ed. 1993. The Jepson manual: Higher plants of California. Univ. California Press, Berkeley. 1400 pp. |
| MABB | DJ Mabberley, The Plant Book: A Portable Dictionary of the higher plants, Cambridge University Press, Cambridge, MA 1989. |
| FONA | Flora of North America |
| KART | Kartesz, J.T. 1999. A synonymized checklist and atlas with biological attributes for the vascular flora of the United States, Canada, and Greenland. First edition. In: Kartesz, J.T., and C.A. Meacham. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden, Chapel Hill, N.C. |
| MANS | Mansfeld's World Database of Agricultural and Horticultural Crops, |
| REHD | Alfred Rehder, Manual of Cultivated Trees and Shrubs: Hardy in North America (Exclusive of the subtropical and warmer temperate regions), 2nd edition, 11th printing, The MacMillan Co., New York (1967) |
| NRCS | U.S. Department of Agriculture, Natural Resources Conservation Service, Plants Database |
