Flora of North America species comparison

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Lathyrus lanszwertii var. bijugatus

Lathyrus lanszwertii var. aridus
Photo is of parent taxon

drypark pea, pinewood peavine, Sandberg's vetchling
Photo is of parent taxon

dryland Nevada pea, Nevada pea, pinewoods peavine
Stems

erect, sprawling, or climbing, 2–4 dm.

erect, 1–3 dm.
Leaves

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.

2–4 cm, terminating in simple bristle, usually less than 1 cm;

leaflets 4–8, blades linear, 20–40 × 2–5 mm.
Inflorescences

2–3 cm.

2–4 cm.
Flowers

8–10 mm, corolla pink or blue.

7–10 mm, corolla white.
2n

= 14.

Lathyrus lanszwertii var. bijugatus

Lathyrus lanszwertii var. aridus
Phenology Flowering Apr–Jun. Flowering Apr–Jun.
Habitat Edges and openings of coniferous woodlands. Open ponderosa pine wood­lands, adjacent sagebrush steppes.
Elevation 600–1600 m. (2000–5200 ft.) 800–2000 m. (2600–6600 ft.)
Distribution
from FNA
ID; MT; WA; BC
[BONAP county map]
from FNA
CA; NV; OR; WA
[BONAP county map]
Discussion

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 aridus is known from the eastern flanks of the Sierra Nevada in California and western Nevada and in the Cascade Range north to south-central Washington. It appears to intergrade with var. lanszwertii in central Washington and Oregon.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 11. FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Lathyrus > Lathyrus lanszwertii Fabaceae > subfam. Faboideae > Lathyrus > Lathyrus lanszwertii
Sibling taxa
L. lanszwertii var. aridus, L. lanszwertii var. lanszwertii, L. lanszwertii var. leucanthus, L. lanszwertii var. pallescens
L. lanszwertii var. bijugatus, L. lanszwertii var. lanszwertii, L. lanszwertii var. leucanthus, L. lanszwertii var. pallescens
Synonyms L. bijugatus, L. bijugatus var. sandbergii L. coriaceus subsp. aridus, L. lanszwertii subsp. aridus
Name authority (T. G. White) Broich: Madroño 54: 371. (2008) (Piper) Jepson: Fl. Calif. 2: 389. (1936)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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