Herbs densely to sparsely strig­illose, sometimes also short-hirtellous, the hairs spreading or appressed; taproot deep, woody with numerous slender branches in age, producing multiple rosettes. Leaves 1.7–12 × 0.3–3.3 cm; petiole not winged, 1.5–3 cm; blade very narrowly elliptic, base attenuate, margins irregularly pinnatifid, apex acute to long-acuminate. Flowers opening near sunrise; floral-tube 1.8–2 (–2.5) mm, glabrate to very sparsely pilose inside near base; sepals 3–6 (–7.5) mm; petals yellow, 5–7 (–9) mm; episepalous staminal filaments 2.8–4 (–5) mm, epipetalous ones 1.5–1.8 (–2) mm, anthers 0.9–1.3 mm; sterile prolong­ation of ovary 4–15 mm, style 3–6.5 mm, sparsely pilose near base to glabrate, stigma surrounded by anthers of longer stamens at anthesis. Capsules subterete, cylindric-ovoid, often slightly asymmetric, 8–17 × 2–5 mm, walls thick, evidently distended by seeds; sessile. Seeds tan to brown, curved-cylindric, 1.3–1.8 × 0.7–0.9 mm, pitted in rows. 2n = 14.

Phenology: Flowering Jun–Aug.
Habitat: Seasonally moist meadows, dry streambeds, edges of drying ponds, mountains and upper foothills.
Elevation: 100–3100 m.

Distribution

• Generated Map
• Legacy Map

Alta., B.C., Sask., Colo., Idaho, Mont., Nev., Utah, Wyo.

Discussion

P. H. Raven (1969) determined that Taraxia breviflora is self-compatible and primarily autogamous.

Selected References

None.

Lower Taxa

None.

"thin" is not a number.