Nonea lutea

Erect or ascending annual, 10–60 cm high; branches and leaves with a mixture of long, stiff, coarse, spreading, unicellular hairs and shorter, finer, spreading, multicellular hairs. Leaves sessile, acute or obtuse at apex, margins entire or dentate; rosette leaves oblanceolate, 2–7 cm long, 5–20 mm wide; cauline leaves lanceolate to ovate. Bracts as long as or longer than sepals. Sepals ovate, 6–10 mm long, acute, elongating to c. 20 mm in fruit, hairy, lobes half to almost as long as tube; corolla 7–12 mm long, pale yellow, lobes ovate-orbicular, 4–6 mm long, shorter than tube; stamens inserted just below throat of corolla-tube. Mericarps ovoid-ellipsoid, 3.5–6 mm long, rugose, ribbed, finely hairy, brown; areole smooth. Flowers spring and summer.