Lathyrus lanszwertii var. bijugatus
Lathyrus lanszwertii var. pallescens
drypark pea, pinewood peavine, Sandberg's vetchling
erect, sprawling, or climbing, 2–4 dm.
erect to climbing, 2–6 dm.
0.5–2 cm, terminating in simple bristle less than 1 cm;
leaflets 2–4, blades lanceolate or linear, 20–50 × 4–15 mm or 30–90 × 2–5 mm.
3–6 cm, usually terminating in well-developed, usually branched tendril;
leaflets 6–8, blades lanceolate, 20–50 × 7–16 mm.
2–3 cm.
5–10 cm.
8–10 mm, corolla pink or blue.
10–15 mm, corolla white.
Lathyrus lanszwertii var. bijugatus
Lathyrus lanszwertii var. pallescens
Variety bijugatus, which is found from southern British Columbia to eastern Washington, northern Idaho, and western Montana, includes two distinct sympatric races: one with lanceolate leaflets (= L. bijugatus var. bijugatus in the sense of White), and one with linear leaflets (= L. bijugatus var. sandbergii).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Variety pallescens is sometimes confused with Lathyrus laetivirens from which it differs in having smaller flowers (10–15 mm versus 15–20 mm in L. laetivirens), and 6–8 lanceolate versus 8–10 ovate leaflets.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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