Machaeranthera cronquistii (S. L. Welsh & N. D. Atwood) Cronquist Xylorhiza cronquistii, common name Cronquist's woody-aster, is a plant species endemic to the Kaiparowits Plateau in Grand Staircase–Escalante National Monument in Kane County, Utah at elevations of 1900–2100 m.[1][2] Xylorhiza cronquistii is a subshrub up to 30 cm tall.

Leaves are narrowly lanceolate, sometimes with small spines along the margins.

Flowers are borne in heads containing 13-17 white ray flowers plus some yellow disc flowers.

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