Erigeron petrophilus var. viscidulus

(A. Gray) G. L. Nesom

Phytologia 72: 198. 1992.

Basionym: Erigeron inornatus var. viscidulus A. Gray in A. Gray et al., Syn. Fl. N. Amer. 1(2): 215. 1884
Treatment appears in FNA Volume 20. Treatment on page 315. Mentioned on page 316.

Stems and leaves eglandular or obscurely glandular, nonglandular hairs mostly stiff, straight or curved. Phyllary apices not purplish or differently colored from proximal portion.

Phenology: Flowering Jul–Sep.
Habitat: Open rocky slopes, ledges, talus, sometimes on serpentine
Elevation: (1200–)1500–2700 m


The cauline vestiture of var. viscidulus is variable, of stiff hairs primarily spreading to slightly deflexed, varying to antrorsely appressed (perhaps suggesting introgression from Erigeron inornatus). Apparent intergrades with E. reductus var. reductus occur in Trinity County.

Selected References


Lower Taxa