Flora of North America species comparison

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Lathyrus lanszwertii var. bijugatus

Lathyrus lanszwertii var. lanszwertii
Photo is of parent taxon

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

lanszwert's pea, Nevada pea, thick-leaf peavine
Stems

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

sprawling or climbing, 4–8 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.

5–8 cm, terminating in well-developed, usually branched tendril;

leaflets 8–10, blades usually lanceolate, rarely linear, 30–70 × 5–20 mm.
Inflorescences

2–3 cm.

3–9 cm.
Flowers

8–10 mm, corolla pink or blue.

10–15 mm, corolla blue-purple, banner retuse to shallowly cordate.
2n

= 14, 28.

Lathyrus lanszwertii var. bijugatus

Lathyrus lanszwertii var. lanszwertii
Phenology Flowering Apr–Jun. Flowering Mar–Jun.
Habitat Edges and openings of coniferous woodlands. Parkland, thickets, sagebrush, juniper, pine, and aspen woodlands.
Elevation 600–1600 m. (2000–5200 ft.) 900–3100 m. (3000–10200 ft.)
Distribution
from FNA
ID; MT; WA; BC
[BONAP county map]
from FNA
CA; CO; ID; NV; OR; UT; WA; WY
[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 lanszwertii is found in northern California, western Colorado, central Idaho, western Nevada, eastern Oregon, the Wasatch Mountains of northeastern Utah, southeastern Washington, and north-central Wyoming.

(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. aridus, L. lanszwertii var. bijugatus, L. lanszwertii var. leucanthus, L. lanszwertii var. pallescens
Synonyms L. bijugatus, L. bijugatus var. sandbergii
Name authority (T. G. White) Broich: Madroño 54: 371. (2008) unknown
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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