English: Wrightworts.
Region: Americas, California: to Texas, Central America.
Habitat: rocky slopes; subtropical or tropical dry forests; elevation ± 300 m.
BotanyShrubs; small.
Stem: multi-branched, < 1 m; hairs erect or recurved, minute.Leaves: variable in size, shape; blade generally < 5 cm, lanceolate to elliptic or cordate, puberulent; petiole 0--8 mm.
Inflorescence: flowers 1 to several per bract.
Flower: lily-like; calyx 1.5--5 mm, lobes 5, narrow-triangular; corolla 1--1.8 cm, white with yellow, maroon-streaked spot on upper lobe; flowering April to June.
Fruit: 7 to 11 mm, glabrous.
Seed: 3 to 4 mm, tubercled; margin finely dentate.
Chromosomes: 2n=36.