OF ARTS AND SCIENCES. 247 



++ Petals includeil, or nearly so. 



2. L. APETALA, Linn. Glandular-pubescent above with short 

 spreading hairs, sparingly so below, 3 to 8 inches high : leaves nar- 

 rowly oblanceolate to linear, an inch or two long : flower nodding, or 

 erect in fruit : calyx much inflated, 6 to 8 lines long, with short acut- 

 ish teeth, strongly purple-veined : petals purple, the blade not broader 

 than the claw, 2-lobed nearly to the middle ; appendages very small ; 

 claw slightly auricled (not 1^ lines wide), naked, — Aleutian Islands 

 and about Behring Straits ; Greenland. (Europe, Asia.) 



Var. GLABRA, Kegel. Wholly glabrous. — Rocky Mountains of 

 British America, by Bourgeau ; St. Paul's Island, H. W. Elliott. ' 



3. L. MONTANA. Glandular-pubescent above with short spread- 

 ing hairs, nearly glabrous below, slender, 2 to 4 inches high : leaves 

 linear-oblanceolate, an inch or two long, the petioles somewhat ciliate; 

 flowers erect: calyx ovate-campanulate, 5 or 6 lines long, with short 

 acute teeth : petals with the emarginate blade not broader than the 

 very narrow claw (not ^ line broad) ; appendages very small : seeds 

 rather broadly margined. — L. opetala, Gray in Am. Journ. Sci. 2 ser. 

 xxxiii. 405, and Proc. Acad. Philad. 1863, 58, in part ; Watson, 

 King's Rep. 36. Mountain peaks of Colorado (n. 132 Parry, 63 Hall 

 & Harbour), and in the Uintas (n. 152 Watson). 



++ ++ Petals exserted. 



4. L. AFFiNis, Vahl. Glandular-pubescent throughout, 3 or 4 

 inches high: leaves linear, an inch long or less, ciliate at base: flowers 

 erect: calyx ovate-campanulate, 4 lines long, with short acutish teeth: 

 petals 6 lines long, the blade undulate, emarginate, narrowing from 

 near the top (1|^ lines wide) to the base of the naked claw; append- 

 ages small, toothed. — Greenland to Labrador. (Europe, Asia.) 



5. L. KixGii. Resembling the last, covered throughout with a 

 short spreading jiubescence : leaves linear-oblanceolate, 1 to 1^ inches 

 long : calyx 6 lines long : petals with the short flat blade rather deeply 

 emarginate ; appendages entire or toothed ; claw ciliate, rather broadly 

 auricled : filaments ciliate. — L. Ajanensis ?, Watson, King's Rep. 37, 

 but quite distinct from that Asiatic species. Peaks of the Uintas at 

 head of Bear River ; apparently also in Northwestern Wyoming (n. 43 

 Parry), but with a shorter calyx and petals, and naked filaments. 



H- -(- Flowers rarely solitary : seeds tuberculate. 

 ++ Low, arctic or alpine. 



6. L. TRiFLORA, R. Brown. Rather stout, glandular-pubescent 

 throughout, 2 to 9 inches high : leaves thickish, narrowly oblanceolate, 



