507 



Gray (loc. cit.) says: ''From the sLape of the leaves, and their size and ahuudauce 

 lip to the summit of the stem, this shoiihl rather ho referred to E. macranthum; but 

 the pubesceuce is strange for that species;" and in the Synoptical Flora he adds, 

 •' Perhaps a distinct species." I believe it to be distinct and rather more related to 

 /v. niacranthus than to E. (jiahelhis; in fact, it diflers little from the former except 

 in the pubescence, which is not only more copious but of a different nature, more 

 resembling that of the hirsute ibrms of E. {/laheUn-s. In E. mavranthus the bracts 

 are nearly smooth, somewhat minutely glandular or puberulent; in E. suhtrinerris 

 thoy are covered with longer spreading hairs. I have named the species E. sithtri- 

 ucrris, from the fact that the lower lateral veins are often stronger, making the 

 leaves look as if triple-nerved, a character often seen in E. sj;ccio.v«s, sometimes in 

 E. viarranlhuf:, though I ha*e not seen it in E. fjUibellus. The leaves are generally 

 thinner than in any of these three related species. 



In woods: Custer, altitude, 1,700 m., August 16 (Xo. 779). 



Brigeron pumilus Nutt. Gen. ii, 147 (1818). 



Dry table-lands: Hot Springs, altitude 1,100 m., June 13 (No. 780). 



Erigeroii compositus I'ursh, Fl. ii, 535 (1811). 



All my specimens are strictly scapose and densely matted. Exposed rocks in the 

 Limestone District, altitude 1,900 m., July 27. Also seen near the Needles, altitude 

 about 2,100 m., in the Harney Eango (No. 781). 



Erigeron canus Gray, PI. Feudl. 67 (1849). 



Dry table-hinds: Hot Springs, altitude 1,100 m., June 13 (No. 782). 



Erigerou philadelphicus L. Sp. PI. ii, 863 (1753). 



Near water: Hot Springs, altitude 1,0.jO m., June 17; Heruiosa, altitude 1,000 m., 

 June 22; Elk Canyon, altitude 1,200 m., June 29 (No. 783). 



Erigeron flagellaris Gray, PI. Fendl. 68 (1849). 



IJiclisoil: Hot Springs, altitude 1,050 m., June 17; Hermosa, altitude 1,000 m., 

 June 22; liuckhorn Mountain, near Custer, altitude 1,800 m., July 14. The speci- 

 meus from the latter place, have much smaller radical leaves than the rest (No. 784). 



Erigerou ramosus beyrichii (Fisch. & Mey.) Smith & Pound, Bot. Surv. Nebr. ii, 

 11 (1893); StvnattU lenruhii Fisch. & Mey. Ind. Sem. Petrop. 27 (1821). 



Below Buckhoru Mountain, Custer, altitude 1,700 m., August 14 (No. 785). 



Erigerou armerifoliiis Turcz.; DC. Prodr. v, 291 (1836). 



Kadical leaves numerous, spatulate. Wet meadow, Custer, altitmle 1,700 m., 

 August 20 (No. 7S6j. 



Erigerou cauadensis L. Sp. PI. ii, 863 (1753). 



This is rare in the Black Hills. Custer, altitude 1,650 m., August 20 (No. 787). A 

 dei)auperate form, resembling much E. divaricalus, was collected in Kuby Glen, Cus- 

 ter, altitude 1,700 m., August 20 (No. 788). 



Filago prolifera (Nutt.) Britton, Mem. Torr. Club, v, 329(1894); Evax prolifera 

 Nutt.; DC. I'rodr. v, 459 (1836). 



I5arren Hills: Hot Springs, altitude 1,100 m., June 13 (No. 789). 



Autennaria dioica (L.) (la-rtn. Fruct. ii, 410 (1791); (InaphaliHm dioUum L. Sp. 

 PI. ii, 8.50 (1753j. 



The typical A. diolva has leaves 1 to 2 cm. long, and 0.3 to 0.6 cm. wide, silvery 

 white on both sides; bracts all obtuse, the papery portion white or jiiukish red. 

 IJorders of woods: Hot Springs, altitude 1,100 m., June 13; Rochfort, altitude 

 1,600 m., July 11 (No. 790). 



A peculiar form with several crowded heads, and often acute bracts, I also refer 

 hero. The bracts are of livid-brownish color, approaching J. alpina in this respect, 

 but the plant is in every respect larger. Custer, altitude 1,700 m., July 4 (No. 792). 



Auteunaria dioica parvifolia (Nutt.) Torr. &- rjr. Fl. ii, 431 (1840); Autennaria 

 jiurti/oUa Nutt. Trans. Amer. Phil. Soc. u. ser. vii, 406 (1841). 



