Argemone albiflora subsp. texana
Mem. Torrey Bot. Club 21: 141. 1958.
Stems sparsely to moderately prickly. Leaf blades: basal and proximal lobed nearly to midrib. Inflorescences: sepal horns 4-6(-10) mm, unarmed or sparingly prickly near base. Capsules usually narrowly ellipsoid, surface partially obscured, longer prickles widely spaced, interspersed with numerous, shorter, unequal ones. 2n = 28.
Phenology: Flowering early spring–summer; fruiting spring–fall.
Habitat: Pastures and waste ground
Elevation: 0-300 m
Ark., La., Mo., Tex.
Argemone albiflora subsp. texana is introduced in Arkansas and Missouri.