Argus Blazingstar

part of the Mentzelia key refers to petaloid filaments which you can see here. Between the five large petals are petaloid filaments with anthers at their tips!

Leaf: lower 2--9 cm, 6--40 mm wide, oblanceolate to elliptic, +- wavy-dentate, upper shorter, deltate to cordate, base clasping.

Fruit: erect, 5--10 mm, 6--11 mm wide, cup-shaped.