| Oenothera missouriensis, Sims (OE. macrocarpa, Pursh. Megapterium missouriensis, Spach). Low perennial with a hard base, the ascending sts. mostly not over 1 ft. long, usually pubescent: lvs. thick, varying from oval to linear to narrow-lanceolate, 5 in. or less long, acuminate, narrowed to a petiole, entire or remotely denticulate: petals 1-2½ in. long, very broad, yellow: caps. 2-3 in. long and nearly as wide, broad-winged. Mo. and Neb., west and south. B.M. 1592. Gn. 20, p. 480. R.H. 1857, p. 598. | | Oenothera missouriensis, Sims (OE. macrocarpa, Pursh. Megapterium missouriensis, Spach). Low perennial with a hard base, the ascending sts. mostly not over 1 ft. long, usually pubescent: lvs. thick, varying from oval to linear to narrow-lanceolate, 5 in. or less long, acuminate, narrowed to a petiole, entire or remotely denticulate: petals 1-2½ in. long, very broad, yellow: caps. 2-3 in. long and nearly as wide, broad-winged. Mo. and Neb., west and south. B.M. 1592. Gn. 20, p. 480. R.H. 1857, p. 598. |