Xylorhiza glabriuscula

Subshrubs, 10-25 cm. Stems branched mostly in proximal ³ / 4 (leafy ² / 3 + their lengths), villoso-puberulent or glabrous, eglandular. Leaf blades oblanceolate, 2.5-8 mm wide, bases attenuate, not clasping, margins flat, entire, faces villoso-puberulent or glabrous, eglandular. Peduncles 2-6 cm. Involucres 7-14 × 12-25 mm. Ray florets 12-25; corollas white. Style-branch appendages equal or shorter than stigmatic lines. 2n = 12.

Flowering May-Jun(-Jul). Open sites, selenious, alkaline clays, dominated by sagebrush, saltbush, greasewood, and grasses; 1100-2300 m; Colo., Mont., S.Dak., Utah, Wyo.