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Lupinus argenteus - silvery lupine

Scientific Family
Fabaceae
Other common names
silverstem lupine
Plant type
Forbs and Subshrubs
Origin
Native
Lifecycle
Perennial
Height
To 2 feet
Riparian
No

Erect flower clusters of pea-like flowers top stems of alternate, palmately compound leaves.

Erect perennial covered in short appressed hairs. Leaves palmately compound, 5 to 10 silvery green leaflets. Pea-like blue, white or purplish flowers arranged in showy spike-like clusters up to 8 inches long, banner petals with scattered or no hairs.

Habitat

Found in montane and open coniferous forests.

Plant Community
Montane Conifer Forest
Low elevation
7000
High elevation
10000

Flower Characteristics

The upper petal sometimes has a yellow to white spot and usually long, soft-silky hairs in the center of the back of the petal, upper keel margins hairy, lower keel margins not hairy; flowers to 1/2 inch long, borne in long terminal clusters.

Flower color
White to blue or purple
Flower shape
Irregular
Tubular
Yes
First bloom month
June
Last bloom month
October
Flower clusters
Elongated

Leaf and Stem Characteristics

Green above with short hairs, lighter green with more hairs beneath; to 3 inches wide and long; palmately divided, with 5 to 10 leaflets.

Leaf type
Compound
Leaf color
Green
Leaf shape
Palmate
Leaf margin
Smooth
Leaf attachment
Alternate
Leaves clasp
No
Leaf hairs
Leaves & stems
Spines
No

Fruit and Seed Characteristics

Pod is up to 1 inch long, flattened and very hairy; usually constricted between the seeds.

Fruit type
Pod
Fruit color
Light brown

2 to 6 light brown seeds are produced in the pod.