Flora of North America species comparison

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Lupinus argenteus var. hillii

Lupinus argenteus var. rubricaulis
Photo is of parent taxon
Photo is of parent taxon
Habit Herbs to 3 dm, hairs inconspicuous and forwardly appressed to spreading. Herbs 2–5.5 dm, glabrous or pubescent.
Stems

branched.

unbranched.
Leaves

usually cauline, basal leaves usually absent at flowering, if present then petioles less than 3 times as long as leaflets;

leaflet blades narrow and folded, oblanceolate or elliptic-oblanceolate, surfaces gray or silvery-pubescent.

cauline;

leaflet blades green, flat, oblanceolate, surfaces glabrous or adaxially pubescent.
Racemes

solitary, terminal.
Pedicels

(1–)2–5(–6) mm.

3–4 mm.
Flowers

6–8 mm;

calyx bulge 0–1 mm;

corolla blue-purple, wings 5.5–7 mm, banner equaling wings, usually thinly strigulose abaxially.

8–11 mm;

calyx bulge 0–1 mm, but not elongated into a spur;

corolla blue, banner spot yellow, glabrous or hairy abaxially.
2n

= 48.

= 48.

Lupinus argenteus var. hillii

Lupinus argenteus var. rubricaulis
Phenology Flowering Jun–Sep. Flowering Jun–Sep.
Habitat Ponderosa pine forest, upper edge of pinyon-juniper woodlands. Moist places in forests.
Elevation 2000–2800 m. (6600–9200 ft.) (2200–)2400–3400 m. ((7200–)7900–11200 ft.)
Distribution
from FNA
AZ; CO; NM; NV; UT
from FNA
AZ; CO; ID; MT; NV; UT; WY; BC
[BONAP county map]
Discussion

Variety hillii is the small-flowered form that occurs in the Southwest in which the flowers are budlike and scarcely gaping.

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

Variety rubricaulis ranges from British Columbia to Montana, southward into northeastern Nevada, the Uinta and Wasatch mountains in Utah, Apache and Coconino counties in Arizona, and western Colorado. It is very similar to var. argenteus but found in more moist or mesic habitats.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 11. FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Lupinus > Lupinus argenteus Fabaceae > subfam. Faboideae > Lupinus > Lupinus argenteus
Sibling taxa
L. argenteus var. argentatus, L. argenteus var. argenteus, L. argenteus var. argophyllus, L. argenteus var. fulvomaculatus, L. argenteus var. heteranthus, L. argenteus var. holosericeus, L. argenteus var. meionanthus, L. argenteus var. moabensis, L. argenteus var. montigenus, L. argenteus var. palmeri, L. argenteus var. parviflorus, L. argenteus var. rubricaulis, L. argenteus var. utahensis
L. argenteus var. argentatus, L. argenteus var. argenteus, L. argenteus var. argophyllus, L. argenteus var. fulvomaculatus, L. argenteus var. heteranthus, L. argenteus var. hillii, L. argenteus var. holosericeus, L. argenteus var. meionanthus, L. argenteus var. moabensis, L. argenteus var. montigenus, L. argenteus var. palmeri, L. argenteus var. parviflorus, L. argenteus var. utahensis
Synonyms L. hillii, L. hillii var. osterhoutianus, L. ingratus var. arizonicus, L. marcusianus, L. osterhoutianus L. rubricaulis, L. alpestris, L. alsophilus, L. argenteus var. depressus, L. caudatus var. rubricaulis, L. depressus, L. maculatus, L. monticola, L. pulcherrimus
Name authority (Greene) Barneby in A. Cronquist et al.: Intermount. Fl. 3(B): 246. (1989) (Greene) S. L. Welsh: Great Basin Naturalist 38: 326. (1978)
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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