Mentzelia goodrichii

K. H. Thorne & S. L. Welsh

Rhodora 95: 407, fig. 14. 1993.

Common names: Goodrich’s blazingstar
EndemicConservation concern
Treatment appears in FNA Volume 12. Treatment on page 513. Mentioned on page 500.

Plants perennial, bushlike, with subterranean caudices or rhizomes. Stems multiple, erect or decumbent, zigzag or straight; branches along entire stem, distal longest, antrorse, straight; hairy. Leaves: blade 23–35.3 × 6.5–13(–16) mm, widest intersinus distance 3.7–11.3 mm; proximal oblanceolate, margins dentate, teeth 4–10, perpendicular to leaf axis, 0.5–1.8 mm; distal elliptic to lanceolate, base not clasping, margins dentate to pinnate, teeth or lobes 4–8, perpendicular to leaf axis, 1.3–3.6 mm; abaxial surface with simple grappling-hook, complex grappling-hook, and needlelike trichomes, adaxial surface with simple grappling-hook and needlelike trichomes. Bracts: margins entire. Flowers: petals golden yellow, 16.1–18.5 × 6.7–9.2 mm, apex rounded, glabrous abaxially; stamens golden yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 7.8–9.3 × 2.3–3.3 mm, with anthers, second whorl with anthers; anthers straight after dehiscence, epidermis smooth; styles 6.3–8.6 mm. Capsules cup-shaped, 8–12 × 6–7.2 mm, base rounded, not longitudinally ridged. Seeds: coat anticlinal cell walls straight, papillae 11–15 per cell.

Phenology: Flowering Jul–Aug.
Habitat: Steep slopes composed of Green River Formation shale.
Elevation: 1900–2700 m.


Mentzelia goodrichii is known only from Duchesne County.

Selected References


Lower Taxa

... more about "Mentzelia goodrichii"
John J. Schenk +  and Larry Hufford +
K. H. Thorne & S. L. Welsh +
Mentzelia +
Goodrich’s blazingstar +
1900–2700 m. +
Steep slopes composed of Green River Formation shale. +
Flowering Jul–Aug. +
Endemic +  and Conservation concern +
Mentzelia goodrichii +
Mentzelia sect. Bartonia +
species +