Heterotheca stenophylla var. angustifolia (Rydb.) Semple has grayish green leaves covered in strigose hairs and few or new stalked glands. It is the more widely distributed variety in the species and is mostly tetraploid (Semple 2008).
Last update 19 May 2023 by J.C. Semple
© 2023 J.C. Semple, including all photographs unless otherwise indicated