Helianthella douglasii Torrey & A. Gray
Helianthella douglasii Torrey & A. Gray is a synonym of:
Helianthella uniflora subsp. douglasii (Torrey & A. Gray) W.A. Weber, an accepted subspecies name sensu FNA Ed. Comm., 2006c.
Helianthella douglasii Torrey & A. Gray is a synonym of:
Helianthella uniflora subsp. douglasii (Torrey & A. Gray) W.A. Weber, an accepted subspecies name sensu FNA Ed. Comm., 2006c.