Monday, March 11, 2019

Lupinus hirsutissimus (Stinging Lupine)

3/24/17 Dripping Springs Trail near Arroyo Seco Creek, Agua Tibia Wilderness,
Cleveland National Forest, Riverside County, CA


COMMON NAME: Stinging Lupine

SPECIES: Lupinus hirsutissimus

FAMILY: Fabaceae (Pea Family)


LOCATION: Dripping Springs Trail near Arroyo Seco Creek, Agua Tibia Wilderness, Cleveland National Forest, Riverside County, CA

Treatment from Jepson eFlora:

Habit: Annual 2--10 dm (often > 10 dm after fire), short-appressed- and stiff-spreading-blister-based-stinging-hairy. 

Leaf: petiole 4--9 cm; leaflets 5--8, 20--50 mm, 10--20 mm wide. 

Inflorescence: 10--30 cm, flowers spiralled; peduncle 5--8 cm; pedicels 2--5 mm; bracts 4--5 mm, generally persistent. 

Flower:12--18 mm; calyx 6--10 mm, lips +- equal, upper deeply lobed; petals dark pink to magenta, drying +- purple, banner spot +- yellow, in age magenta, keel upper margins glabrous, lower densely ciliate middle to near claw. 

Fruit: 2--4 cm, +- 8 mm wide, coarsely hairy. 

Seed: 3--6. 

Ecology: Locally common. Dry, rocky areas, burns; 

Elevation: < 1400 m. 

Bioregional Distribution: c&s CW (SnFrB, SCoRO, possibly others), SW; 

Distribution Outside California: Baja California. Flowering Time: Mar--May 

Jepson eFlora Author: Teresa Sholars & Rhonda Riggins

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