[The Pea Family in the Columbia River Gorge]

Lanceleaf Scurf-pea, Lance-leaf Scurf-pea, Lemon Scurfpea, Wild Lemonweed

Psoralidium lanceolatum

Synonyms: Psoralea lanceolata, Psoralea lanceolata ssp. lanceolata, Psoralea lanceolata ssp. scabra, Psoralea lanceolata var. purshii, Psoralea lanceolata var. stenophylla, Psoralea lanceolata var. stenostachys, Psoralea scabra, Psoralea stenostachys, Psoralidium lanceolatum var. stenophyllum, Psoralidium lanceolatum var. stenostachys, Psoralidium stenophyllum

Inflorescence of Lanceleaf Scurf-pea, Lance-leaf Scurf-pea, Lemon Scurfpea, Wild Lemonweed: Psoralidium lanceolatum (Synonyms: Psoralea lanceolata, Psoralea lanceolata ssp. lanceolata, Psoralea lanceolata ssp. scabra, Psoralea lanceolata var. purshii, Psoralea lanceolata var. stenophylla, Psoralea lanceolata var. stenostachys, Psoralea scabra, Psoralea stenostachys, Psoralidium lanceolatum var. stenophyllum, Psoralidium lanceolatum var. stenostachys, Psoralidium stenophyllum)
Inflorescence of lanceleaf scurfpea as seen in sandy soils at milepost 115.5 along Washington Highway 14...............May 11, 2009.

Leaves of Lanceleaf Scurf-pea, Lance-leaf Scurf-pea, Lemon Scurfpea, Wild Lemonweed: Psoralidium lanceolatum (Synonyms: Psoralea lanceolata, Psoralea lanceolata ssp. lanceolata, Psoralea lanceolata ssp. scabra, Psoralea lanceolata var. purshii, Psoralea lanceolata var. stenophylla, Psoralea lanceolata var. stenostachys, Psoralea scabra, Psoralea stenostachys, Psoralidium lanceolatum var. stenophyllum, Psoralidium lanceolatum var. stenostachys, Psoralidium stenophyllum)Photo at right illustrates lance-leaf scurf-pea near the Avery gravel pit in the eastern Columbia River Gorge...........May 5, 2001.
Characteristics:

Lance-leaf scurf-pea is an erect, freely branched perennial from 30-60 cm high with varied herbage, which ranges from smooth and hairless to glandular or covered with appressed hairs all pointing the same direction. The stem leaves are compound ternate (3 leaflets) which are narrowly obovate to elliptic-oblanceolate in shape, each ranging from 2-3 cm long (See photos at right and below.). The leaves become much reduced in size towards the top of the stem.

The inflorescence is a closely flowered raceme of 10-40 white to blue flowers. Individual flowers range from 4-7 mm long with a bell-shaped calyx with short, ovate-triangular teeth which are equal in size.


Habitat:

Lance-leaf scurf-pea is found in sandy soils. It may be found on the windward side of active sand dunes or among bunchgrasses or sagebrush.


Range:

Lance-leaf scurf-pea may be found from central Washington south to the east of the Cascade Mts. to California and east to Nebraska and Nevada.

In the Columbia River Gorge, it may be found between the elevations of 100'-500' from the Major Creek Plateau east to the eastern end of the Gorge.


Lanceleaf Scurf-pea, Lance-leaf Scurf-pea, Lemon Scurfpea, Wild Lemonweed: Psoralidium lanceolatum (Synonyms: Psoralea lanceolata, Psoralea lanceolata ssp. lanceolata, Psoralea lanceolata ssp. scabra, Psoralea lanceolata var. purshii, Psoralea lanceolata var. stenophylla, Psoralea lanceolata var. stenostachys, Psoralea scabra, Psoralea stenostachys, Psoralidium lanceolatum var. stenophyllum, Psoralidium lanceolatum var. stenostachys, Psoralidium stenophyllum)

Lanceleaf scurfpea as seen in sandy soils at milepost 115.5 along Washington Highway 14...............May 11, 2009.

Inflorescence of Lanceleaf Scurf-pea, Lance-leaf Scurf-pea, Lemon Scurfpea, Wild Lemonweed: Psoralidium lanceolatum (Synonyms: Psoralea lanceolata, Psoralea lanceolata ssp. lanceolata, Psoralea lanceolata ssp. scabra, Psoralea lanceolata var. purshii, Psoralea lanceolata var. stenophylla, Psoralea lanceolata var. stenostachys, Psoralea scabra, Psoralea stenostachys, Psoralidium lanceolatum var. stenophyllum, Psoralidium lanceolatum var. stenostachys, Psoralidium stenophyllum) --- Ternately compound leaf of Lanceleaf Scurf-pea, Lance-leaf Scurf-pea, Lemon Scurfpea, Wild Lemonweed: Psoralidium lanceolatum (Synonyms: Psoralea lanceolata, Psoralea lanceolata ssp. lanceolata, Psoralea lanceolata ssp. scabra, Psoralea lanceolata var. purshii, Psoralea lanceolata var. stenophylla, Psoralea lanceolata var. stenostachys, Psoralea scabra, Psoralea stenostachys, Psoralidium lanceolatum var. stenophyllum, Psoralidium lanceolatum var. stenostachys, Psoralidium stenophyllum) --- Ternately compound leaf of Lanceleaf Scurf-pea, Lance-leaf Scurf-pea, Lemon Scurfpea, Wild Lemonweed: Psoralidium lanceolatum (Synonyms: Psoralea lanceolata, Psoralea lanceolata ssp. lanceolata, Psoralea lanceolata ssp. scabra, Psoralea lanceolata var. purshii, Psoralea lanceolata var. stenophylla, Psoralea lanceolata var. stenostachys, Psoralea scabra, Psoralea stenostachys, Psoralidium lanceolatum var. stenophyllum, Psoralidium lanceolatum var. stenostachys, Psoralidium stenophyllum)

Inflorescence and ternately compound leaves of lance-leaf scurf-pea from Horsethief Butte..................late May 2001.

Paul Slichter