Senna roemeriana (Scheele) Irwin & Barneby

Description

Herbaceous plants to 2 ft (70 cm) high with stems dying back during winter. Leaves once-pinnate with 1 pair of dull green, lance-shaped leaflets. Yellow flowers are produced in clusters at the ends of the stems in summer.

Habitat

Native to parts of Texas, Oklahoma, New Mexico, and adjacent northeastern Mexico. It occurs in the Chihuahuan Desert and in grasslands, mesquite savanna, and oak-juniper woodlands, especially on limestone soils.

Horticulture

Two-leaf senna would make an attractive addition to wildflower gardens in dry regions. The plants are short-lived but reseed readily in suitable locations with adequate irrigation.

Senna roemeriana | Desert Legume Program (arizona.edu)

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