498 FABACEAE 



33. Lupinus holosericeus Nutt. Nuttall's Silky Lupine. Fig. 2592. 



Lupinus holosericeus Nutt. in Torr. & Gray, Fl. N. Amer. 1 : 380. 1840. 



Appressed-silky, subdecumbent to erect, 2-4 dm. tall. Lower leaves long-petioled, silky on 

 both sides, petioles 3-17 mm. long, leaflets 5-9, oblanceolate, acute at apex, 2-4 cm. long; pe- 

 duncles 2-3 cm. long, racemes 8-15 cm. long ; flowers 7-10 mm. long, scattered or subverticillate, 

 pedicels 3-4 mm. long, appressed-pubescent, bracts deciduous; calyx not spurred, scarcely gib- 

 bous, upper lip bidentate, lower entire or tridentate; petals blue or lilac, banner silky, 15-20 mm. 

 long, about 6 mm. wide ; ovules 3-4, seeds flesh-colored, about 4 mm. long. 



Sagebrush plains, Upper Sonoran and lower edge of the Transition Zones; intermontane Oregon, Washington, 

 and Idaho; Type locality: "islands and gravelly banks of the Wahlamet," where evidently not now existing. (Cf. 

 Contr. Dudley Herb. 1: 30. 1927.) June-Aug. 



Lupinus holosericeus var. amblyophyllus (Robinson) C. P. Smith, Bull. Torrey Club 51: 304. 1924. 

 {Lupinus canescens var. amblyophvllus Robinson, Contr. U.S. Nat. Herb. 11: 354. 1906.) Leaflets elliptic- 

 lanceolate, rounded at apex, 25-35 mm. long. Known only from the type collection. Type locality: Egbert 

 Springs, Douglas County, Washington. 



34. Lupinus meionanthus A. Gray. Gray's Many-flowered Lupine. Fig. 2593. 



Lupinus meionanthus A. Gray, Proc. Amer. Acad. 6: 522. 1865. 



Densely subappressed-silky, woody at base only, erect or ascending, 3-6 dm. tall. Leaves 

 many, all short-petioled, silky on both sides, petioles 20-35 mm. long, leaflets 6-9, oblanceolate, 

 12-20 mm. long; peduncles about 3 cm. long, racemes 5-10 cm. long, densely flowered; flowers 

 about 6 mm. long, pedicels 3 mm. long, appressed-pubescent, bracts deciduous ; calyx-lips ob- 

 scurely notched or tridentate; petals blue or lilac, banner glabrous, suborbicular, yellow in the 

 center, keel ciliate on the upper edges, the acumen short, broad, and obtuse ; fruit not seen. 



Mountain forests and open slopes, Canadian and Hudsonian Zones; Madera and Tuolumne Counties to 

 Plumas County, California, and adjacent Nevada. Type locality: Nevada, near Carson City. June-Aug. 



35. Lupinus sulphureus Dougl. Sulphur-flowered Lupine. Fig. 2594. 



Lupinus sulphureus Dougl. ex Hook. Fl. Bor. Amer. 1: 166. 1830. 



Appressed-subsilky, erect, 4-10 dm. tall. Lower leaves long-petioled, pubescent both sides 

 yet greenish, petioles 4-20 cm. long, leaflets 9-15, narrowly-oblanceolate, acute at apex, 3-6 cm. 

 long ; peduncles 3-6 cm. long, racemes 10-20 cm. long, rather dense ; flowers 10-12 mm. long, 

 scattered or subverticillate, pedicels 4-8 mm. long, usually appressed-pubescent, bracts deciduous ; 

 calyx scarcely to strongly gibbous, upper lip bidentate, lower entire ; petals pale sulphur-yellow, 

 rarely bluish, banner more or less pubescent on the back, wings glabrous, keel ciliate on upper 

 edges ; pods silky, 2-3 cm. long, ovules about 4, seeds not seen. 



Dry slopes, Transition Zone; Blue Mountains of Washington and Oregon, also adjacent Idaho. Type 

 locality: "Blue Mountains of Northwest America, on elevated grounds near the source of Clark's River." 

 May-Aug. 



36. Lupinus leucopsis Agardh. Big Bend Lupine. Fig. 2595. 



Lupinus leucopsis Agardh, Syn. Gen. Lup. 29. 1835. 



Appressed-silky, erect, branched, 3-8 dm. tall. Lower leaves long-petioled, all densely silky 

 both sides, petioles slender, upper about as long as their leaflets, leaflets 5-8, conduplicate, linear- 

 oblanceolate, acute, largest 40-50 mm. long, racemes 6-12 mm. long, verticils 6-10, bracts decidu- 

 ous, pedicels 2-4 mm. long, loosely appressed-pubescent ; flowers spreading or ascending, 10-12 

 mm. long, calyx densely appressed-silky, subsymmetrical or subgibbous, upper lip bidentate, lower 

 entire ; petals violet-blue or pale purple, banner hardly reflexed, glabrous, wings glabrous, keel 

 arcuate, its lower bend somewhat exposed ; pods 20-25 mm. long, 5-6 mm. wide, ovules 4 or 

 more, seeds not seen. 



Open ground. Upper Sonoran Zone; Douglas and Grant Counties, "Big Bend Country," Washington. Type 

 locality: "North West America." April-June. 



Lupinus leucopsis var. dubius C. P. Smith, Sp. Lup. 111. 1939. (Lupinus bingenensis var. dubius C. P. 

 Smith. Bull. Torrey Club 51 : 305. 1924.) Leaflets flat, greenish-subsilky, radially spreading, largest seen 

 70 mm. long; petioles ascending: keel ciliate. Hillsides, Upper Sonoran Zone; Benton, Yakima, and Kittitas 

 Counties, Washington. Type locality: Prosser, Benton County, Washington. 



Lupinus leucopsis var. Hendersonianus C. P. Smith, Sp. Lup. 111. 1939. Leaflets flat, suberect, sub- 

 silky when mature, upper greener, largest 40-50 mm. long, 8-10 mm. wide; petioles erect, parallel with stem; 

 keel ciliate. Hendricks Park, Eugene, Lane County, Oregon. 



Lupinus leucopsis var. shermanensis C. P. Smith, Sp. Lup. 111. 1939. Leaflets flat, sometimes sub- 

 erect, obtuse, densely silky both sides, largest seen 30-35 mm. long, 5-6 mm. wide; petioles almost erect; keel 

 ciliate. Columbia River Highway near Biggs Junction, Sherman County, Oregon. 



Lupinus leucopsis var. bingenensis (Suksdorf) C. P. Smith, Sp. Lup. 112. 1939. (Lupinus bingenensis 

 Suksdorf, Werdenda 1: 12. 1923.) Keel non-ciliate; stems appressed-pubescent. Upper Sonoran Zone; Bingen, 

 Washington, and Hood River, Oregon. Type locality: Bingen, Klickitat County, Washington. 



Lupinus leucopsis var. mollis (Heller) C. P. Smith, Sp. Lup. 112. 1939. (Lupinus mollis Heller, 

 Muhlenbergia 8: 105. 1912.) Keel non-ciliate; stems spreading-pubescent. Dry hills, Lower Arid Transition 

 Zone; Wasco and Sherman Counties, Oregon, and Kittitas County, Washington. Type locality: The Dalles, 

 Wasco County, Oregon. 



37. Lupinus nevadensis Fleller. Nevada Lupine. Fig. 2596. 



Lupinus nevadensis Heller, Muhlenbergia 6: 107. 1910. 



More or less villous with spreading or ascending hairs, erect or ascending, 3-4 dm. tall. 

 Lower leaves long-petioled, densely villous below, more greenish above, petioles 3-15 cm. long, 

 leaflets 7-9, oblanceolate, acute at apex, 3-4 cm. long; peduncles 3-6 cm. long, racemes 1-2 dm. 



