Castilleja linariifolia

[3] It grows up to one meter in height and has sparse, linear leaves which are between 20 and 80 mm in length and have up to 3 lobes.

[4] The flowers, which consist of a pinkish-red to yellow calyx and yellow-green floral tube, appear in panicles or spikes between June and September in its native range.

[4] This species occurs on rocky slopes and arid plains and is associated with sagebrush scrub as well as pinyon pine or juniper woodland.

[4] It is native to Arizona, California, Colorado, Idaho, Montana, New Mexico, Nevada, Oregon, Utah and Wyoming.

[5] The Edith's checkerspot butterfly (Euphydryas editha) in some areas such as Gunnison County, Colorado feeds nearly exclusively on the Wyoming paintbrush.

Castilleja linariifolia pinkish flowers
An illustration from National Geographic in 1917.