Flora of North America species comparison

The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Lathyrus lanszwertii var. lanszwertii

Lathyrus lanszwertii var. leucanthus
Photo is of parent taxon

lanszwert's pea, Nevada pea, thick-leaf peavine
Photo is of parent taxon

Nevada pea
Stems

sprawling or climbing, 4–8 dm.

erect, 1–3 dm.
Leaves

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

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

2–3 cm, terminating in simple bristle, less than 1 cm;

leaflets 4–6, blades lanceolate and 25–50 × 5–15 mm, or linear and 35–70 × 2–5 mm.
Inflorescences

3–9 cm.

3–5 cm.
Flowers

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

10–15 mm, corolla white.
2n

= 14, 28.

= 28.

Lathyrus lanszwertii var. lanszwertii

Lathyrus lanszwertii var. leucanthus
Phenology Flowering Mar–Jun. Flowering Apr–Jun.
Habitat Parkland, thickets, sagebrush, juniper, pine, and aspen woodlands. In sagebrush, openings in pine, oak, and aspen woodlands.
Elevation 900–3100 m. (3000–10200 ft.) 2000–3200 m. (6600–10500 ft.)
Distribution
from FNA
CA; CO; ID; NV; OR; UT; WA; WY
[BONAP county map]
from FNA
AZ; CO; NM; UT; WY
[BONAP county map]
Discussion

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.)

Variety leucanthus includes two distinct sympatric races: one with lanceolate leaflets (= L. leucanthus), and one with linear leaflets (= L. arizonicus Britton).

(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. bijugatus, L. lanszwertii var. leucanthus, L. lanszwertii var. pallescens
L. lanszwertii var. aridus, L. lanszwertii var. bijugatus, L. lanszwertii var. lanszwertii, L. lanszwertii var. pallescens
Synonyms L. leucanthus, L. arizonicus, L. lanszwertii var. arizonicus
Name authority unknown (Rydberg) Dorn: Vasc. Pl. Wyoming, 171, 297. (1988)
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).



Type/paste one or more Latin names into the boxes above; matching taxa will show up below the box as you type. You can use the up/down arrow keys to move through the list.

(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Apiaceae, Boraginaceae, and Polemoniaceae.)

Choose a data source: Flora of North America, OregonFlora, UW Burke Herbarium

The species comparison tool is brought to you by:
Northwest Wildflowers