Leaves of gilia scopulorum
are somewhat wider than many other gilia species, irregularly divided into broad lobes, themselves partly lobed, or toothed. Lobe tips taper to a sharp point. The undersurfaces of the leaves have a covering of translucent, glandular hairs. Lower stem leaves are angled upwards, and form a rosette; upper leaves are smaller, less divided and few in number. Stems are erect, branched and glandular hairy.
The inflorescence is an open cluster, typically of around 20 flowers, attached by pedicels of differing lengths. Pedicels and calyces are covered by stalked, glandular hairs. The calyces, less than 0.2 inches long, have five green lobes, tapering to a sharp point, separated by narrower white margins. The corolla, up to 0.7 inches in length, has a narrow purple tube, a gradually widening throat, yellow to pink, and five pale, lavender-pink lobes, blunt-pointed at the tips. The five stamens have white filaments and blue anthers, and, like the style, are exserted a little way beyond the corolla lobes.