486 



high; pod globose or a little elongated, stellate-pnbe8<ent witli a long style, pedicels 

 recurved as in /,. ludoviciana, -which it resembles, althougli it is more slender and 

 more brauched and has wniallcr pods. 



llillsidf, Hot .S]>rin,us, altitude l.lOo im., June 11 and August 3 (No. 533). 



Lesquerella spatulata s]). uov. 



Low and somewhat ca-spitose; stems 3 to 10 cm. high, subscapose; leaves all radi- 

 cal, spatulate or oblauceolate, decurrcnt on the petiole; jJetaJs sjiatulate, j^ellow; 

 pods on recurved pedicels, ovate, only slightly compressed toward the apex, finely 

 pubescent, i-seeded; septum not perforate; style scarcely as long as the mature 

 pod. 



Like the last in habit, but lower. The pod, however, is ovate, ]>ointed, and 

 slightly comi)ressed toward the apex, about the length of the slender style but 

 shorter than the i)edicel, which is rellexed and tlien curved upward. The plant is 

 somewhat intermediate between L. montaiia, tlic preceiling si)e(i('s, and L. alpiiia. 

 I'rom L. moiittuia it dilVers in its more slender habit, narrower leaves, and smaller 

 pods; from L. uJpina, in being much taller and in having broader leaves, less coiu- 

 pressed jutds, longer and recurved pedicels, and shorter stj'le. In /-. aJpiua the style 

 is longer than tlio pod, the pedicels erect, and the septum perforateil. It ditlers 

 from L. argentta arenosa in the form of the pod. Similar specimens were found in 

 the Harvard Herbarium, viz, in C. C. Parry's collection of 1873 (No. 21) and in the 

 collection of Jenuey's expedition, 1875. These were referred to L. alpina by Dr. 

 Watson. In the Columbia College herbarium there are tlie following specimens: 

 H J. AVebber, from Belmont, Nebraska, 1889; Dawson, Milk River, N. W.T., 1883, 



Dry hilltop, north of Deadwood, altitude 1,600 m., July 5 (No. 531). 



Cameliiia sativa (L.) Crautz, Stirp. Austr. i, 18 (17GL'); Myagnun nativuin L. Sp. 

 PI. ii, 641 (1753). 



Introduced: Railroad cuibankment above Custer, altitude 1,700 m., July 15 

 (No. 535). 



Bursa bursa-pastoris (L.) Weber in Wigg. Prim. Fl. Hoist. 41 (1780); Thlanpi hur- 

 sajiasloria L. Sp. PI. ii, 647 (1753). 



The common form was collected iu yards at Custer, altitude 1,625 m., .June 4 

 (No. 536). 



The so-called variety iniegrifolia, that is, the form with entire leaves, was collected 

 on a hillsi<lo near Central City, altitude 1,700 m., July 3 (No. 537). 



A delicate form was found with finely piunatilid leaves; the divisicms oblong, 

 sometimes sinuately toothed; j)ods (immature) liroadly oval, sometimes truncate, 

 but not at all triangular. The general ai)]>earance reminds (ine scuuewhat of I'eca- 

 dulia niidUaitUa. Hillside, south of Custer, altitude l,6l.'5 m., May 28 (No. 538). 



Lepidium iucisum Roth, Neue Peitr. i, 224 (1802). 



Rare in the Ulack Hills: Hot .Sjjriugs. altitude 1,0.50 m., .huie 16 (No. 539). 



CAPPARIDACE^. 



Jacksouia trachysperma ( I'orr. A: (Jr.) (Jrecue, I'ittonia, ii, 175 (1?<U0); I'oldtiisin 

 trarlniH/ienna Torr. iV <ir. Fl. i,'(;6'J (1K40). 



Draws among the foothills: Hot Springs, altitude 1,100 m.. August 2 (No. 540). 



Cleome serrulata Pursh, Fl. ii. Ill (1M11). 



Draws among the foothills: Hot Springs, altitude 1,1(»0 m., August 2 (No. 541). 



CISTACEiE. 



Helianthemum majus (L.) B. S. 1'. Prel. Cat. N. Y. 6 (1888); Lcchfu major L. Sp. 

 PI. i, !M» (1753); Hrliantlicmum canadriinr walkenr Kvans, Bot. Gaz. xv, 211 (181(0). 



The only locality hitherto recorded for this form is the original one in Douglas 

 County, Colorado. Roadside, east of Custer, altitude 1,600 m., July 22 (No. 542). 



