Trumpet creeper, trumpet vine
Native to eastern US; adventive in a few places in the west, most commonly in Arizona
Field margins, waste ground, verges, generally at low elevations
Hairless, opposite, pinnately divided into shallowly toothed leaflets
Leaves of campsis radicans, a woody vine, are once pinnately divided into an odd number of ovate leaflets, tapering to pointed tips. Stems and leaves are hairless. Orange-red flowers are produced in terminal, racemic clusters; they are relatively large, up to three inches long, with a tubular corolla opening to five recurved lobes. The five-lobed calyx is yellowish-green, and about a quarter of the length of the corolla tube. Four stamens are slightly exserted, while an infertile stamen (the staminode) is shorter.
This species can form sizeable clumps, many feet high. It occurs in a few scattered locations across the West, such as around San Francisco Bay, in the Four Corners area, and across central Arizona.