487 



VIOLACEiE. 



Viola pedatifida Don, Hist. Dichl. PI. i, 3l'0 (1831). 

 Valley: t'uster, altitiule 1,650 ni., Juue -1 (No. 543). 



Viola obliqua Hill, Hort. Kew. 310, t. 12 (1769); Viohi paJmata ohli'qua (Hill) 

 Hitehfock, Traus. .St. Louis Acad, v, 487 (1891) ; 7'. cucuUata Ait. Hort. Kew. iii, 288 

 (1789). 



Low grouuds: Kuby Gulch, near Custor, altitude 1,650 m., May 31 (No. 544). 



Viola palustris L. Sp. PL ii, 934 (1753). 



Only four specimens in fruit were collected. These have larger and thinner leaves 

 than usual, resembling .somewhat those of the Alaskan /'. langndorjii. Sylvan Lake, 

 6 miles northeast of Custer and 4 miles from Harneys Peak, altitude 2,000 m., July 20 

 (No. 545). 



Viola blauda Willd., Hort. Berol. t. 24 (1806). 



Among moss, in a canyon below Sylvan Lake, altitude 1,900 m., .June 9 (No. 546). 



Viola caniua aduiica (Smith) Gray, Pi-oc. Amer. Acad, viii, 377 (1872); Viola 

 aditnca Smith, Eees's Cycl. No. 63 (1817). 



My specimens lack the dark-brown spots attributed to this variety in Hook. Fl. 

 Bor. Amer, i, 79. Borders of rich woods, early in the spring. South of Custer, alti- 

 tude 1,650 m.. May 30 (No. 547). 



Viola canina oxyceras (?) Wats. Bot. Cal. i, 50 (1870). 



I have not seen any specimens of this variety, but as it is the only one described 

 with acute s^mr, I place this plant with it. 



Rare: near Lead City, altitude 1,500 m., July (No. 548). 



Viola canadensis L. Sp. PI. ii, 936 (1753). 



Common: Little Elk Canyon, altitude 1,100 m., June 29; Elk Canyon, altitude 

 1,200 m., June 29; Kochford, altitude 1,600 m., July 11 (No. 549). 



Viola uuttallii Pursh, Fl. i, 174 (1814). 



Prairies and rich valleys: Custer, altitude l,6r)0 m., June 3; Hot Springs, altitude 

 1,0.50 m., June 12 (No. .550). 



Viola pubescens Ait. Hort. Kew. iii, 290 (1789). 



Rare: Elk Canyon, altitude 1,200 m., June 29 (No. 551). 



Viola scabriuscula (Torr. & Gr.) Schwein.; Torr. & Gr. Fl. i, 142 (1838), as 

 synonym ; Viohi jfube.icen.s scabriiificnJa Torr. & Gr. loc. cit. 



This plant has nearly always one or more radical leaves at the time of blooming, 

 wllil(^ r. puhcxrciifi seldom has any. 



Elk Cauyou, altitude 1,100 m., June 29 (No. 5.52). 



POLYGALACEiE. 



Polygala senega latifolia Torr. & Gr. Fl. i, 131 (1838). 



It is not uncommon in the northern part of the Black Hills. Elk Canyon, altitude 

 1,300 m., Juue 30; south of Lead City, altitude 1.600 ni., .Inlj' 6; near Bull Springs in 

 the Limestont^ District, altitiule 1,900 m., July 26 (No. 553). 



Polygala alba Nutt. Gen. ii, Xl (1818). 



Hills below H(tt Sjirings, altitude 1,000 m., June 17; 15 miles east of Custer, alti- 

 tude 1,400 m., July 22 (No. 554). 



Polygala verticillata L. Sp. PI. ii, 706 (17.53). 



Fifteen miles east of Custer, on French Creek, altitude 1,400 m., .July 22 (No. 555). 



CARYOPHYLLACEiE. 



Saponaria vaccaria L. Sp. PI. i, 409 (17.53). 



On the railroiul cmbanknuiut south of Minnekahta, altitude 1,270 m., August 4 



(No. 550). 



Silene autirrhiua L. Sp. PI. i, 419 (1753). 



