Skip to main content

Lathyrus laetivirens - aspen pea

Scientific Family
Fabaceae
Synonyms
Lathyrus lanszwertii, Lathyrus lanszwertii var. laetivirens
Other common names
aspen vetchling
aspen peavine
plateau peavine
Plant type
Forbs and Subshrubs
Origin
Native
Lifecycle
Perennial
Height
1/2 to 2 feet long
Riparian
No

Stems solitary or few, vine-like and climbing over other plants or sometimes erect and independent of support; herbage without hairs, somewhat dull grayish-green; rhizomes slender.

Perennial, rhizome; few slender stems, vine-like, often uses other plants for support; leaves with 3 to 5 pairs of broad, hairless leaflets, tendrils at leaf tips; elongated clusters of few to many white to pink flowers grow from the upper leaf nodes.

Habitat

Meadows, slopes, pine or spruce-aspen forests.

Plant Community
Montane Conifer Forest
Pinyon Juniper Woodlands
Low elevation
5500
High elevation
8500

Flower Characteristics

Few to many small stems of flowers from upper leaf nodes; hairless, white to pink petals, 1/4 to 3/4 inch, tinged with pale purple or bluish to purple veins.

Flower color
White, pink, purple, bluish
Flower shape
Irregular
Tubular
Yes
First bloom month
April
Last bloom month
September
Flower clusters
Elongated

Leaf and Stem Characteristics

Simple or branched tendril at end of stem; 6 to 10 leaflets; wide egg-shaped, to 1-1/2 inches long and to 1/16 inch wide; smooth, hairless; pale above, whitish powdery below; pair of pointed, 1/3 inch long appendages (stipules) at base.

Leaf type
Compound
Leaf color
Dull grayish-green
Leaf shape
Round or oval
Leaf margin
Smooth
Leaf attachment
Alternate
Leaves clasp
No
Leaf hairs
None
Spines
No

Fruit and Seed Characteristics

1/8 to 1/4 inch long; elliptic-oblanceolate (somewhat between rounded like an egg and having a rounded apex and tapering base).

Fruit type
Pod