Plant: Annual 10-60 cm; stem branched throughout; branches generally ascending, strigose and rough-hairy to bristly, hairs spreading Leaves: 1.5-5 cm, simple, entire, linear to lanceolate, spreading-bristly; cauline generally opposite below, alternate above INFLORESCENCE: cymes, open in fruit Flowers: sepals free, 2-3 mm, 3.5-5 mm and linear-oblong in fruit, rough-hairy and bristly, bristles ascending to spreading; corolla generally white, tube generally 1-13 mm, corolla limb 3-6 mm wide, throat appendages 5, bright yellow Fruit: Fruit: nutlets 1-4, 1.5-2 mm, widely lanceolate to ovate, back generally tubercled to sparsely rough-granular, shiny, groove on inside surface ± open, especially at forked base Misc: Sandy to rocky soils, oak woodland, coniferous forest; 300-2800 m.; Mar-Jul