Lupinus sparsiflorus – Coulter's Lupine
Scientific Name: Lupinus sparsiflorus
Common Names: Coulter's Lupine, Mojave Lupine
Growth Habit: Herb/Forb
Arizona Native Status: Native
Flower Color: Violet-blue, White (rare)
Flowering Season: Winter (late), Spring
Height: To 16 inches (41 cm) tall
Description: The pea-like flowers are spiraled around the hairy, upright flower spikes. The individual flowers are 1/2 inch (1.3 cm) long and have a brown-spotted, yellow and white banner spot that becomes magenta-tinged with age. The keel petals curve upward and have a hairy fringe. The leaves are green and palmately compound with 7 to 11 linear to narrowly oblanceolate, partly folded leaflets. The upper surfaces of the leaflets are covered in spreading and flat-lying hairs and are hairiest near the margins.
The similar Arizona Lupine (Lupinus arizonicus) has pinkish purple flowers and broader leaflets with no hair on the upper surfaces.
Poisonous – The plants and most especially the seeds are poisonous and contain toxic quinolizidine alkaloids including lupinine and sparteine.
Kingdom: Plantae – Plants
Subkingdom: Tracheobionta – Vascular plants
Superdivision: Spermatophyta – Seed plants
Division: Magnoliophyta – Flowering plants
Class: Magnoliopsida – Dicotyledons
Family: Fabaceae – Pea family
Genus: Lupinus L. – lupine
Species: Lupinus sparsiflorus Benth. – Coulter's lupine
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