500 



Epilobium drummondii Ihmssk. Monogr. Gatt. Kpil. 271 (1884). 



Two forms Aveiv met with. One was tall, sometimes 5 iliii. lii.!j;li, stringy, with nar- 

 row leaves: Rocliford, altitude 1,700 m., July 12 (No. 697). The other was lower, 

 with hroadir. ovatc-laneeolate leaves siuiiatdy toothed, sessile and half-clasping. 

 Si]>8 Spring, in the Limestone District, altitude 1,800 ni., July 28 (No. 698). 



Epilobium hornemanni Reicheub. Icon. Crit. ii, 73 (1824). 



Only a few depauperate plants collected at Sips Spring togetiur witli thojtreceding 

 (No. 699). 



Epilobium paniculatum Nutt. ; Torr. «.V: Gr. I'l. i, 4!tO (1840). 



Custer, altitude l,70()iu., August 21 (No. 574). 



Gayophytiim ramosissimuni Torr. ».V Gr. Fl. i,.">13 (1840). 



Hills: Kochford, altitude 1,700 m., July 12; Hull Springs, altitude 1,900 m., .Inly 26 

 (No. 700). 



CEnothera biennis L. Sp. Tl. i, 346 (1753). 



This is evidiiitly native in western Nebraska, as well as \n the Black Hills. In 

 geiu'ral habit it differs nuich from (>. hieiniis of Europe. Rocliford, altitude 1,600 m., 

 July 11 (No. 701). 



Another form, somewhat like the preceding, but not strigose, was also found. The 

 pul)escence is fine, silky, appressed ; radical leaves many, obovate, about 2.5 cm. long; 

 calyx tube nearly 4 cm. long, lobes linear-lanceolate about 1.25 cm. long; petals 

 broadly obovate; pod linear-oblong, only a little narrower upward. Custer, alti- 

 tude 1,700 m., July 15 (No. 702). 



CEnothera simiata L. Maut. 228 (1767). 



Only a few small specimens secured at Hot Springs, altitude 1,100 m., .Tune 14 

 (No. 7o:5). 



CEnothera albicaulis Pursli, Fl. ii, 733 (1814), not Nutt.; (K. pinnatifida Nutt. 

 Gen. 1,245(1818). 



The plant is very variable: Hot Springs, altitude 1,100 m., June 16; Hermosa, 

 altitude 1,000 m., June 23 ; Custer, altitude 1,700 ni., July 16 (No. 704). 



CEnothera pallida leptophylla (Nutt.) Torr. A Gr. Fl. i, 495 (1838) ; (E. leptophi/Ua 

 Nutt.; Torr. A. (Jr. loc. cit., as synonym; O!. alhicauUa Nutt. Gen. i, 245 (1818), not 

 Pursh. 



The ty])ical (K. paJVula has more or less runcinate-tootlied leaves. Hndvcii soil: 

 Custer, altitude 1,700 m.. July 15 (No. 705). 



CEnothera coronopifolia Torr. & Gr. Fl. i, 495 (1840). 



Sandy soil: Custer, altitude 1,700 m., June 4; Hot Springs, jilritude 1.100 m., 

 June 15 (No. 706). 



CEnothera caespitosa Nutt. Eraser's Cat. (1813). 



Battle Mountain, cast of Hot Springs, altitude 1,200 m., June 15 (No. 707). 



CEnothera serrulata Nutt. Gen. i, 246 (1818). ' 



Fall River Falls, altitude 1,000 ni., June 17; Rapid City, altitude 1,0.".() m., .Iune25; 

 Elk Canyon, altitude 1,200 m., June 29 (No. 708). 



Gaura coccinea Pursh, Fl. ii, 733 (1814). 



Hot Springs, altitude 1,100 m., June 13 (No. 700). 



A form, jiei fectly smooth, with white bark which ])cels olf lik(^ (hat of (I'.iiothrra 

 palliila, was collected at Cluster, altitude 1,700 m., July 15 (No. 710). Iliis form is 

 alFo found in western Nebraska, where T ccdlected it in 1890 and 1891. 



Gaura parviflgra Dougl.; Hook. Fl. IJor. Amer. i, 208 (1834). 



Hot Springs, altitude 1,050 m., August 2 (No. 711). 



'Gray includes in liis list, in Newton A- Jenney's Report, also <J:. chri/mntha Mx. 

 (G-'.pumila), which must be an error, as that ])laut is strictly an Atlantic coast spe- 

 cies. 



