Lupinus arizonicus

Jepson 1993, Wiggins 1964, Kearney and Peebles 1969

Duration: Annual Nativity: Native Lifeform: Forb/Herb General: Annual, erect or ascending stems with short appressed and long spreading hairs, 10-50 cm tall. Leaves: Alternate, on petiole 2.5-7 cm, palmately compound with 6-10 leaflets, 10-40 mm long, 5-10 mm wide, upper surface glabrous, linear to linear-oblanceolate, acute to rounded. Flowers: On peduncle 2-6 cm, flowers spiraled on raceme 4-24 cm long, bracts 4-8 mm, generally persistent, pedicels 2-4 mm long; calyx bilabiate, 3-6 mm, lips equal, upper lip deeply lobed, banner, wings dark pink to magenta, drying blue-purple to whitish, banner spot yellowish, becoming darker magenta, upper margins of keel glabrous, lower margins ciliate near claw. Fruits: Pods ascending, 1-2 cm long, more than 5 mm wide, coarsely hairy, often on one side of inflorescence axis. Ecology: Found in sandy soils along washes below 3,000 ft (914 m); flowers January-May. Notes: There are three subspecies in Arizona. Ethnobotany: Unknown, but other species in the genera have uses. Etymology: Lupinus comes from Latin for wolf, while concinnus means neat or elegant, while arizonicus means of or from Arizona. Synonyms: Linnaeus concinnus var. arizonicus, Linnaeus sparsiflorus var. barbatus, there are also several regional subspecies. Editor: SBuckley, 2010