University of Waterloo

Heterotheca zionensis

Heterotheca zionensis Semple is the common species in much of Utah. It was first described from near Zion National Park in southern Utah. The leaves have a high density of short strigose hairs and are also glandular. The leaves can be grayish green to whitish due to the high density of hairs.

Heterotheca zionensis Fig 38 Semple 1996

Heterotheca zionensis 8875 on "hotpot" in northern UT

Heterotheca zionensis, Semple & Chmielewski 8875, on "hotpot" in northern Utah

Heterotheca zionensis 7859 type loc near Zion N.P.; Kane Co. UT

Heterotheca zionensis, Semple & Heard 7859, type location near Zion N.P.; Kane Co., Utah

Heterotheca zionensis 10509, flowering shoot from along roadside in southern NM

Heterotheca zionensis, inflorescence branch, Semple 10509, along roadside, southern New Mexico

Last update 19 May 2023 by J.C. Semple

© 2023 J.C. Semple, including all photographs unless otherwise indicated