Flora of North America species comparison

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Lathyrus lanszwertii var. pallescens
Photo is of parent taxon
Stems

erect to climbing, 2–6 dm.
Leaves

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

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

5–10 cm.
Flowers

10–15 mm, corolla white.

Lathyrus lanszwertii var. pallescens
Phenology Flowering Apr–Jun.
Habitat Park­land, thickets, sagebrush, oak, pine, aspen, and mixed conifer woodlands.
Elevation 1500–3200 m. (4900–10500 ft.)
Distribution
from FNA
CO; UT; WY
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.)
Source FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Lathyrus > Lathyrus lanszwertii
Sibling taxa
L. lanszwertii var. aridus, L. lanszwertii var. bijugatus, L. lanszwertii var. lanszwertii, L. lanszwertii var. leucanthus
Name authority Barneby in A. Cronquist et al.: Intermount. Fl. 3(B): 206. (1989)
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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