508 



Kadical leaves narrow, oblanceolate, morn or less revolutc, finely silvery on both 

 sides; llowerinjjNtcni sliMider, bearini:; sinallrr heads with bri{i;litly rose-colored hracts. 

 The ]ilant is more dirt'nscly sproadiiit,'. I'rairie: Koihford, altitude 1.600 m., July 12 

 (No. 791). 



Antennaria plantagiiiifolia (L.) K'ichards. ISot. Ai>i>. cd. 2, ^50 (1823); (hiaj)h<tlinm 

 }iltiiita(jiiii/oUiim L. Sp. I'l. ii, 850 (1753). 



This species i3 very variable, at least if all the western forms belong to it. The 

 typical form witli large, thin, 3-ribbed leaves was not met with. Wliat I take for 

 an alpine form of this s])eciea was collected early in the s]>ring, around Custer, alti- 

 tude 1.6r>0m., May 30 (No. 794). Tiiis is low, 7 to 10 cm. liigh, witli smaller heads, 

 radical leaves obovato or oblong, about 3 cm. long, glabrous al)o^■e, white beneath. 



The other two lorms collected biloiig to the western form of J. pUinltKi'imfoVia, 

 which jierhaps is distinct from the eastern. The leaves are smaller, 1.5 tol cm. long, 

 silky on both sides, and seldom 3-ncrved. In one of the forms the leaves arc about 

 3 cm. long, the stem more robust and more iloccose. Hot Springs, altitude 1,100 m., 

 June 13; Hermosa, altitude 1,050 m., June 2; Lead City, altitude 1,700 m., July 4 

 (No. 793), The other form is more slender and. less Iloccose, the leaves about one- 

 half the size of those of the last. This is the same as No. 173 of my western Nebraska 

 collection. Lead City, altitude 1,700 m., July 6 (No. 795). 



Antennaria niargaritacea (L.) Hook. I'l. IJor. Amer. i, 329 (1833); (hiaitlialinm 

 mariidritaceiim Jj. Sj). I'l. i, 85 (1753). 



Englewood, altitude 1,600 m., August 13 (No. 796). 



Iva xanthifolia Nutt. Geu. ii, 185 (1818). 



"Waste places, rare: Custer, altitude 1,600 m., August lit (No. 797). 



Ambrosia psilostachya DC. Prodr. v. .526 (1830). 



li'arc: Hot Springs, altitude 1,700 m., August 2 (No. 793). 



Ambrosia aitemisiaefolia L. Sp. PI. ii, 988 (1753). 



Custer, altitude 1,650 m., August 11 (No, 799). 



Brauneria pallida (Nutt.) IJritton, Mem. Torr. Club, v. 333 (1895); lUidheckia 

 pallida Nutt. Journ. Acad. Phila. v, 77 (1834); Echinacea anijuHtifolia DC Prodr. v, 

 551 (1836). 



Prairie; Custer, altitude 1,600 m., August 1 (No. 800). 



Rudbeckia hirta L. Sp. PI. ii, 907 (1753). 



Meadows : Kochford, altitude l,(iOO m., July 12; in the Limestone District, altitude 

 1,900 m., July 26 (No. 801). Oue specimen was very leafy, with narrow linear- 

 lanceolate leaves. 



Lepachys columnaris (Pursh) Torr. iV Or. Fl. ii,315 (1841); UndlHikin vol mini aris 

 Pursli, Fl. ii, 575 < l.sll ). 



h'arc : ( inly a few specimens secured at ('uster, altitmlel,tr>Om., August 1 (No. 802). 



Heliantbus annuus L. Sp. PI. ii, 904 (1753). 



Custer, altitude 1,(>00 m., August 1 (No. 803). 



Heliantbus petlolaris Nutt. Journ. Acad. Phila. ii, 115 (1821). 



Only a few sii»;<inu'ns were secured; all had sonui of the leaves opposite. Hot 

 S].riii-s, altitude 1,UKI m.. August 2 (No. 804). 



Heliantbus scaberrimus Ell. Hot. S. Car. & (Jeorg. ii, 123 i 1S21 1; //. liiiidim Desf. 

 Cat. Hort. Pari.s, e<l. .3. 184 (1829). 



Custer, altitude 1,700 in,, August 1 (No. 805). 



Heliantbus maximiliani Schrad. Ind. Seui. Hort. (ioett. ( 1835). 



Custer, altitiule 1,700 m., August 15 (No. 806). 



Heliantbella qiiinquenervis (Hook.) Gray, Proc. Amer. Acad. \i\, loi 18S3); Ifeli- 

 anlliiin ijiiiniiiK iienin Hook. Loud. Journ. Hot. vi, 217 (18I7K 



The leaves in my specimens arc as often alternate as ojtiiosite, and the plant is 

 fiiucU taller tbaa the s|)ecinieuB iu the National Herbarium, 



