Genus 31. 



PEA FAMILY. 



389 



I. Oxytropis podocarpa A. Gray. Inflated 

 Oxytrope. Fig. 2562. 



Oxytropis arctica var, infiata Hook. Fl. Bor. Am. i : 

 146. 1833. 



Oxytropis podocarpa A. Gray, Proc. Am. Acad. 6 : 234. 

 1864. 



Spiesia infiata Britton, Mem. Torr. Club 5: 201. 1894. 



Aragallus inflatus A. Nelson, Erythea 7: 59. 1899. 



Acaulescent or nearly so, more or less villous- 

 pubescent, much tufted, i'-4' high. Stipules mem- 

 branous, imbricated, adnate to the petiole, lanceolate, 

 about 2" long; leaves pinnate; leaflets 9-21, linear, 

 2"-4" Igng, about i" wide, obtuse or obtusish ; pedun- 

 cles i-2-flowered, scarcely exceeding the leaves ; 

 flowers violet, 7"-8" long; calyx densely dark-pubes- 

 cent; pod membranous, much inflated, i-celled, ovoid, 

 pubescent, short-stalked or sessile in the calyx, about 

 9" long, pointed; ventral suture slightly intruded. 



Arctic and alpine ; Labrador and arctic America, south 

 in the Rocky Mountains to Colorado. Summer. 



2. Oxytropis multiceps Nutt. Tufted 

 Oxytrope. Fig. 2563. 



Oxytropis multiceps Nutt.; T. & G. Fl. N. A. i : 341. 

 1838. 



Spiesia multiceps Kuntze, Rev. Gen. PI. 207. 1891. 



Aragallus multiceps Heller, Cat. N. A. PI. 4. i8g8. 



Nearly acaulescent, with a deep root, tufted and 

 matted, silky-canescent, 3' high or less. Stipules 

 membranous, acute, adnate to the petiole ; leaves 

 pinnate ; leaflets 7-9, oblong, 3"-6" long, i"-2" 

 wide, scape i'-ii' long, about equalling the leaves, 

 or shorter, 1-3-flowered ; flowers purple, nearly i' 

 long; calyx slightly pubescent, its teeth short; 

 pod short-stalked in the calyx, coriaceous, little 

 inflated, about i' long, i-celled, acute, pubescent, 

 enclosed by the swollen calyx. 



On dry hills and mountains, western Nebraska, 

 Wyoming and Colorado. Summer. 



3. Oxytropis arctica R. Br. Arctic Oxytrope. 

 Fig. 2564. 



Oxytropis arctica R. Br. App. Parry's Voy. 278. 1823. 

 Spiesia arctica Kuntze, Rev. Gen. PI. 206. 1891. 

 Aragallus arcticus Greene, Pittonia 3: 211. 1897. 



Acaulescent, tufted, villous-pubescent, 1-4' high. Stip- 

 ules membranous, lanceolate, imbricated, pubescent; 

 leaves pinnate; leaflets 7-21, linear, or linear-oblong, 

 obtusish, 2"-4" long, about i" wide; peduncles exceed- 

 ing the leaves, 2-S-flowered at the summit ; flowers vio- 

 let (?), 6"-io" long; calyx pubescent; pod coriaceous, 

 little or not inflated, oblong or ovoid-oblong, sessile, 

 pubescent, incompletely 2-cel!ed. 



Shores of the Gulf of St. Lawrence ; Hudson Strait. 

 Hudson Bay, and along the Arctic seacoast. Summer. Sev- 

 eral related species occur in high arctic America. 



