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Flora:Leafy Pea

From Portland Hikers Field Guide

Leafy Pea in the Ridgefield Wildlife Refuge (Steve Hart)
Lathyrus polyphyllus
Pea Family


Alternate Names: Leafy Peavine, Oregon Pea, Wild Pea

Color Pink.jpg
Petals Pinkfive.jpg
Origin Native.jpg
Status Common.jpg

Contents

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Description

Leafy Pea is common in well lit areas.

Lacamas Creek (Steve Hart)
Dog Mountain (Steve Hart)
Dog Mountain (Steve Hart)
Dog Mountain (Steve Hart)
Lacamas Creek (Steve Hart)


Tips on identifying Peas

Peas can be distinguished from Vetch by the leaves. Vetch leaves are directly opposite and Pea leaves are alternating.

Technically leafless with arrowhead shaped leaflike stipules;single yellow flowers;grows west of the Cascades Yellow Vetchling Lathyrus aphaca
4-8 leaflets;2-7 pink flowers;grows west of the Cascades Sierran Peavine Lathyrus nevadensis var. nevadensis
4-8 leaflets;2-4 white flowers;grows east of the Cascades Cusick's Peavine Lathyrus nevadensis var. cusickii
10-16 leaflets;6-12 pink flowers fading to blue;grows west of the Cascades Leafy Pea Lathyrus polyphyllus
winged stems; 2 narrow, heavily veined leaflets;5-15 large bright pink flowers;grows near highways and farms Everlasting Pea Lathyrus latifolius
6-10 narrow, hairless leaflets;2-10 flowers;grows in Cascade foothills Mountain Pea Lathyrus lanszwertii
6-10 narrow, haired leaflets;2-10 flowers;grows in Cascade foothills Torrey's Pea Lathyrus torreyi
rounded leaflets;3-8 large bright pink flowers;grows near coast Beach Pea Lathyrus japonicus
4-8 small, round, furry leaflets;4-8 pink and white flowers;grows in coastal dunes Silky Beach Pea Lathyrus littoralis
2 very narrow long leaflets;single red or purple flower;grows in disturbed areas Grass Pea Lathyrus sphaericus

Contributors

Portland Hikers Field Guide is built as a collaborative effort by its user community. While we make every effort to fact-check, information found here should be considered anecdotal. You should cross-check against other references before planning a hike. Trail routing and conditions are subject to change. Please contact us if you notice errors on this page.