Lathyrus vestitus var. vestitus
Leaflets: blade surfaces often sparsely to densely pubescent throughout, sometimes pubescent abaxially, glabrous adaxially. Flowers 14–17 mm; lateral calyx lobes lanceolate or linear-triangular and equal to tube, or deltate and shorter than tube; corolla rose, lavender, or blue-purple, banner erect, blade equal to or somewhat longer than claw. 2n = 14.
Phenology: Flowering Apr–May.
Habitat: Roadside fencerows, grasslands, oak or conifer woodlands along creeks, chaparral.
Elevation: 0–2000 m.
Distribution
Calif., Oreg., Mexico (Baja California).
Discussion
As delimited here, var. vestitus includes populations found in habitats from moist coastal coniferous forests to chaparral, from California to southwestern Oregon. Numerous attempts to describe distinctive taxa within this series of populations (R. V. Bradshaw 1925; C. L. Hitchcock 1952; S. L. Broich 1987; D. Isely 1992) have been undermined by extensive intergradation among them.
Selected References
None.