Flora of North America species comparison

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Lupinus polyphyllus var. humicola

Lupinus polyphyllus var. ammophilus
Photo is of parent taxon

Holmgrens' lupine, Wyeth's lupine
Photo is of parent taxon
Habit Herbs 2–4.5(–7) dm, caudex above ground. Herbs 1.5–5.5 dm, hirsute, caudex subterranean, divisions rhizomelike.
Stems

ascending, not hollow.

diffuse, subhollow.
Leaflets

(5–)7–12, blades 30–55(–70) mm, surfaces silky-strigulose, gray or silver, often folded, appearing linear.

6–9(or 10), largest blade (25–)30–60 mm, abaxial surface hirsute.
Flowers

upper keel margins usually ciliate.

upper keel margins ciliate.
2n

= 48.

= 48.

Lupinus polyphyllus var. humicola

Lupinus polyphyllus var. ammophilus
Phenology Flowering (Apr–)May–Jun(–Sep). Flowering Apr–Jul.
Habitat Dry desert slopes, dry washes, pinyon-juniper woodlands, grassy sites, thinly wooded sites. Barren clay, seeps, oak-pinyon-juniper chaparral, sagebrush scrub.
Elevation 1400–2500 m. (4600–8200 ft.) 1200–3000 m. (3900–9800 ft.)
Distribution
from FNA
AZ; CA; CO; ID; MT; NV; OR; UT; WA; WY; AB; BC
from FNA
AZ; CO; NM; UT
Discussion

Variety humicola is of conservation concern in California, where it is known only from Inyo County. In Arizona, it is known only from Navajo County, south of Lake Powell.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Variety ammophilusis is rare in Arizona and is known only from Apache County.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 11. FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Lupinus > Lupinus polyphyllus Fabaceae > subfam. Faboideae > Lupinus > Lupinus polyphyllus
Sibling taxa
L. polyphyllus var. ammophilus, L. polyphyllus var. burkei, L. polyphyllus var. polyphyllus, L. polyphyllus var. prunophilus, L. polyphyllus var. saxosus
L. polyphyllus var. burkei, L. polyphyllus var. humicola, L. polyphyllus var. polyphyllus, L. polyphyllus var. prunophilus, L. polyphyllus var. saxosus
Synonyms L. humicola, L. arcticus var. cottonii, L. arcticus var. humicola, L. arcticus var. tetonensis, L. cottonii, L. diversalpicola, L. flavescens, L. holmgrenianus, L. humicola var. tetonensis, L. rydbergii, L. wyethii, L. wyethii subsp. tetonensis L. ammophilus, L. ammophilus var. crassus, L. crassus
Name authority (A. Nelson) Barneby: Great Basin Naturalist 46: 257. (1986) (Greene) Barneby: Great Basin Naturalist 46: 257. (1986)
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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