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. pallescens

Lathyrus lanszwertii var. lanszwertii
Photo is of parent taxon
Photo is of parent taxon

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

erect to climbing, 2–6 dm.

sprawling or climbing, 4–8 dm.
Leaves

3–6 cm, usually terminating in well-developed, usually branched tendril;

leaflets 6–8, blades lanceolate, 20–50 × 7–16 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

5–10 cm.

3–9 cm.
Flowers

10–15 mm, corolla white.

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

= 14, 28.

Lathyrus lanszwertii var. pallescens

Lathyrus lanszwertii var. lanszwertii
Phenology Flowering Apr–Jun. Flowering Mar–Jun.
Habitat Park­land, thickets, sagebrush, oak, pine, aspen, and mixed conifer woodlands. Parkland, thickets, sagebrush, juniper, pine, and aspen woodlands.
Elevation 1500–3200 m. (4900–10500 ft.) 900–3100 m. (3000–10200 ft.)
Distribution
from FNA
CO; UT; WY
from FNA
CA; CO; ID; NV; OR; UT; WA; WY
[BONAP county map]
Discussion

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.)

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. bijugatus, L. lanszwertii var. lanszwertii, L. lanszwertii var. leucanthus
L. lanszwertii var. aridus, L. lanszwertii var. bijugatus, L. lanszwertii var. leucanthus, L. lanszwertii var. pallescens
Name authority Barneby in A. Cronquist et al.: Intermount. Fl. 3(B): 206. (1989) 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).



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