A herb like some Nemophilas in habit; root fibrous, annual; stem single or several radical ones together, simple or sparingly branched, angular, decumbent or prostrate, glabrous, 1.5-12 in. long; radical leaves rosulate, spathulate-oblanceolate, obtuse at the apex, attenuate at the base, pinnatifid, dentate or subentire, including the petiole 0.5-1.5 in. long, 0.125-0.334 in. broad, glabrous or nearly so; upper leaves pinnatifid or subpinnatisect, opposite or verticillate or sometimes alternate, elongated, 0.5-1 in. long, 0.2-0.5 in. broad, glabrous or nearly so; lobes or segments 9-11, ovate or oblong, obtuse, unequal; petiole 0.34-1.25 in. long; peduncles axillary, solitary, 1-flowered, as long as or exceeding the leaves, 25-51 mm [as '1-2 in.'] long, furrowed; calyx-segments ovate-acuminate or lanceolate, acute, shortly ciliate, green, striate, 0.83-0.167 in. long, three of them approximated and erect, the other two reflexed; corolla whitish outside, purple-violet inside, about 0.5 in. broad, bifoveolate, yellow outside the two small pouches; upper lip deeply bifid, lobes obtuse; lower lip trifid, with equal obtuse concave lobes, middle lobe emarginate; stamens all fertile; filaments 4, the lower bifurcate at the middle, one branch antheriferous, the other membranous-dilated; anthers 4, glabrous; capsule obliquely ovoid, pointed, 0.2-0.25 in. long.
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Annual to 30 cm. Leaves ovate, elliptic, oblong to obovate, pinnatifid to pinnatisect, sometimes entire to dentate. Flowers like those of D. appendiculata but mostly larger, limb 12-24 mm long, with larger sacs, ± 1-2 mm long, stamens pubescent, projecting forwards and downwards and posterior filaments with a sterile branch that is expanded, rounded and flattened near tip.
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