518 FABACEAE 



81. Lupinus volcanicus Greene. Mount Rainier Lupine. Fig. 2640. 



Lupinus volcanicus Greene, Pittonia 3: 308. 1898. 



Loosely spreading-villous, stems simple, slender, scaly at base, 2-3 dm. tall. Leaves few, 

 cauline, lowest longer-petioled, bright green though loosely villous on both sides, petioles slender, 

 2-4 cm. long, leaflets 6-8, oblanceolate to spatulate, obtuse or rounded at apex, 2-3 cm. long ; 

 peduncles 3-4 cm. long, racemes 3-6 cm. long; flowers 10-12 mm. long, subverticillate, pedicels 

 3-5 mm. long, spreading-pubescent, bracts early deciduous ; calyx villous, upper lip notched, 

 toothed, or lobed, lower entire ; petals blue, banner with a yellow center which changes to purple, 

 glabrous, broader than long, keel arcuate, ciliate from on upper edges ; ovules 5, pods and seeds 

 not seen. 



Volcanic sand, Arctic Zone; Mount Rainier, Washington, the type locality and not known elsewhere. Aug. 



82. Lupinus saxosus Howell. Stony-ground Lupine. Fig. 2641. 



Lupinus saxosus Howell, Erythea 1: 110. 1893. 



Densely villous, low, stems abbreviated, whole plant 1-3 dm. tall. Leaves mostly basal and 

 long-petioled, glabrous or subvillous above, appressed-silky below ; petioles 5-8 cm. long, leaflets 

 8-12, oblanceolate, 12-30 mm. long ; peduncles 2-4 cm. long, racemes 5-10 cm. long, densely 

 flowered ; flowers 14-18 mm. long, pedicels 4-6 mm. long, spreading-pubescent, bracts deciduous ; 

 upper calyx-lip notched or deeply lobed, lower tridentate ; petals blue, banner with yellow center, 

 almost as wide as long, keel ciliate on upper edges ; ovules 4 or 5, pods and seeds not seen. 



Rocky fields and hilltops, Upper Sonoran Zone; eastern Washington to Modoc County, California. Type 

 locality: "on high stony ridges, from near The Dalles eastward, in Oregon and Washington." May. 



Lupinus saxosus var. subsericeus (Robinson) C. P. Smith. {Lupinus subsericeus Robinson ex Piper, Contr. 

 U.S. Nat. Herb. 11: 354. 1906.) Differing only in lacking spreading hairs. Hillsides, Upper Sonoran Zone; 

 eastern Washington and Oregon. Type locality: Ellensburg, Kittitas County, Washington. 



83. Lupinus arcticus S. Wats. Arctic Lupine. Fig. 2642. 



Lupinus arcticus S. Wats. Proc. Amer. Acad. 8: 526. 1873. 

 Lupinus borealis Heller, Muhlenbergia 8: 82. 1912. 

 Lupinus yukonensis Greene, Leaflets Bot. Obs. 2: 233. 1912. 



Villous or glabrate, 2-4 dm. tall, erect or ascending; stems slender or stouter and sub- 

 fistulous. Leaves few, or number increased by axillary clusters, more or less villous below and 

 subvillous to glabrous above; stipules 15-25 mm. long, lower conspicuous; petioles 10-30 cm. 

 long, slender or subfistulous ; leaflets 6-9, oblanceolate, largest about 60 by 12 mm. ; peduncles 

 3-8 cm. long, racemes 6-12 cm. long; flowers 16-18 mm. long, spreading, pedicels 4-8 mm. long, 

 bracts subpersistent or deciduous, 5-8 mm. long; calyx subsymmetrical, subvillous, upper lip 

 bidentate, lower entire or tridenticulate ; petals broad, blue to lilac, banner glabrous, well reflexed, 

 suborbicular, keel arcuate, non-ciliate or ciliolate ; pods and seeds not seen. 



Hudsonian and Canadian Zones; northern Washington to the arctic coast of Alaska and Canada. Type 

 locality: Bear Lake, sources of the Mackenzie River system. July. 



Represented southward by the following: 



Lupinus arcticus var. prunophilus (M. E. Jones) C. P. Smith. {Lupinus Wycthii S. Wats, as to plants of 

 Spalding, not Wyeth.) (.Lupinus prunophilus M. E. Jones, Contr. West. Bot. No. 13: 7, 1910.) Keel ciliate on 

 upper edges; coarser in all its parts and more villous, largest leaflets to 8 cm. long. Colorado and Utah to eastern 

 Washington and British Columbia; mountain sides where the snow melts early, the annual growths short-lived. 

 Type locality: Mammoth Hills, Juab County, Utah. 



Lupinus arcticus var. tetonensis (E. Nels.) C. P. Smith. (Lupinus humicola tctonensis E. Nels. Bot. 

 Gaz. 30: 120. 1900.) Northwestern Wyoming and central Washington, eastern foothill valleys of the Cascades. 

 Type locality: Teton Mountains, Lincoln County, Wyoming. Keel ciliate, stems and petioles glabrate. 



Lupinus arcticus var. Cottonii C. P. Smith. (Lupinus Cottonii C. P. Smith, Bull. Torrey Club 51 : 309. 

 1924.) A reduced subalpine phase of the last with longest petioles only 18 cm. long and smaller flowers. Sub- 

 alpine meadows, near snow line, Cascades of Yakima County, Washington. Type locality: head of Hell Roaring 

 River (Creek), Mount Adams. 



Lupinus arcticus var. subalpinus (Robinson) C. P. Smith. (Lupinus subalpinus Robinson ex Piper, Contr. 

 U.S. Nat. Herb. 11: 356. 1906.) Keel non-ciliate or ciliolate, leaflets cuneate to spatulate, rounded or obtuse 

 at apex. Subalpine meadows of central and northern Washington. Type locality: "Cascades to Fort Colville, 

 1860, Dr. Lyall." 



Lupinus arcticus var. humicola (A. Nels.) C. P. Smith. (Lupinus humicola A. Nels. Bull. Torrey Club 

 25: 204. 1898.) Stems usually slender and without spreading hairs; leaflets sparsely but persistently appressed- 

 pubescent above. Central Wyoming and eastern foothill valleys of the Cascades in Washington. Type locality: 

 Laramie hills, Albany County, Wyoming. 



84. Lupinus magnificus M. E. Jones. Magnificent Lupine. Fig. 2643. 



Lupinus magnificus M. E. Jones, Contr. West. Bot. No. 8: 26. 1898. 



Sublanate and long-villous, erect, 6-12 dm. tall, acaulescent. Leaves crowded at the base, 

 petioles 15-20 cm. long, leaflets about 7, 30-40 by 6-10 mm., acute, hairy on both sides; pe- 

 duncles 10-30 cm. long, racemes 30-45 cm. long; flowers 16-18 mm. long, more or less ver- 

 ticillate, bracts deciduous, pedicels stout, 4 mm. long, spreading-pubescent ; upper calyx-lip bifid, 

 lower entire ; petals pinkish purple, banner glabrous, suborbicular, emarginate, the yellow center 

 changing to dark purple, keel yellow, arcuate, ciliate above on the very short, upturned acumen; 

 ovules about 10, pods and seeds not seen. 



Gravelly washes, Upper Sonoran Zone; desert mountains of Inyo County, California. Type locality: Pleas- 

 ant Canyon, Panamint Mountains, Inyo County, California. May-June. 



Lupinus magnificus var. glarecola M. E. Jones, Contr. West. Bot. No. 8: 26. 1898. Flowers only 10-12 

 mm. long, pedicels slender, about 8 mm. long, racemes 20-30 cm. long. Gravelly soil, known only from the type 

 locality, Lone Pine, Inyo County, California. 



