I see you created the same split I did, would you like to take the lead? I’ve been working on a key to help people figure out where all the varieties go and I would like to include it in the description of the split.
Key to Lupinus lepidus varieties
A1 Racemes sessile or very short-pedunculate, shorter than the leaves and largely concealed by them
B1 Wing petals slender, 7-8 mm, about 1/3 as broad; banner slender, width < 3/5 length; c Ore to w Mont and s to Colo and Utah, also in White Mtns, Cal…
… var. utahensis >> L. caespitosus var. utahensis
B2 Wing petals broader, gen > 8 mm and nearly 1/2 as broad; banner broader, width 3/5 of length; Blue Mts, Ore, and Okanogan Co, Wash… var. cusickii >> L. cusickii var. cusickii
A2 Raceme pedunculate, at least partially surpassing leaves
C1 Plants prostrate and matted
D1 racemes mostly < 5 cm at anthesis; upper montane to subalpine; BC to s Cal, e to w Ida and Nev var. lobbii >> L. sellulus var. lobbii
D2 racemes elongate mostly > 5 cm at anthesis; dry, open pine forest, s Ore and n Cal, e to s Ida and ne Nev … var. sellulus >> L. sellulus var. sellulus
C2 Plants not matted
E1 Plants with simple or branched stems generally more than 10 cm long and bearing 4 or more leaves
F1 Racemes usually solitary and terminal, long and dense, 9-15 whorls; vernally moist meadows in pine and sagebrush; ne Cal and nw Nev …
… var. confertus >> L. confertus
F2 Racemes usually several, short and open, 3-7 whorls; rocky ridges and hillsides; ec Cal
G1 Leaflets 10-30 mm, flowers 9-11 mm, Kaweah River, Tulare & Fresno Cos. var. culbertsonii >> L. culbertsonii
G2 Leaflets 5-15 mm, flowers 7-9 mm; c Sierras, White and Sweetwater Mountains, Cal… var. ramosus >> L. confertus
E1 Plants with short stems, less than 10 cm and bearing fewer than 4 leaves
H1 Racemes gen partially concealed by longer leaves; flowers mostly ~ 9-11 mm; sandy or gravely hillsides in sagebrush and juniper; sc Wash to Cal and Nev, e to sc Ida var. aridus >> L. aridus var. aridus
H2 Racemes gen exserted well beyond longest leaves; flowers 11-13 mm; dry prairies and slopes; s BC to nw Ore, w Cas … var. lepidus >> L. lepidus s.s.
Key cobbled together from Intermountain Flora, 1989; Flora of the Pacific Northwest, 1981; Jepson, 2012; Illustrated Flora of the Pacific States, 1950.
Janel Johnson (jdjohnson), 6 Aug 2019.