231 



16256 integriusculus A. Gray 



16257 seridophyllus Greene 



16258 Smallii Britton 



16259 Soldanella A. Gray 



16260 Solidago Rydb. 



16261 solitarius Rydb. 



16262 Sonnei Greene 



16263 spatuliformis Heller 



16264 sphaerocephahis Greene 



16265 streptanthifolius Greene 



16266 subcimeatus Rydb. 



16267 subnudus DC. 



16268 snbvestitus Howell 



16269 sylvaticus L. 



16270 sylvestris L. 



16271 taraxacoides (A. Gray) Greene 



16272 Thurberi A. Gray 



16273 tomentosus Michx. 



16274 Toumeyi Greene 



16275 triangularis Hook. 



16276 Hanseni Greene 



16277 tridenticulatus Rydb. 



16278 trigonophyllus Greene 



16279 valerianella Greene 



16280 variifolitis Rydb. 



16281 viscostis L. 



16282 vulgaris L. 



16283 Wardii Greene 



16284 werneriaefolius Greene 



16285 Whippleanus A. Gray 



16286 Wootonii Greene 



Arctium 



16287 Lappa L. 



16288 minus Schk. 



16289 tomentosum (Lam.) Schk. 



Savissurea 



16290 alpina DC. 



16291 Ledebouii A. Gray 



16292 Americana D. C. Eaton 



Carcluus 



(Cnicus) 



16293 altissimus L. 



16294 Americanus (A. Gray) Greene 



16295 amplifolius Greene 



16296 Anderson! (A. Gray) Greene 



16297 Andrews!! (A. Gray) Greene 



16298 Arizonicus (A. Gray) Greene 



16299 arvensis (L.) Robs. 



16300 Bernardinus Greene 



16301 bipinnatus (Eastwood) Heller 



16302 Breweri (A. Gray) Greene 



16303 calcareus (Jones) Heller 



16304 Californicus (A. Gray) Greene 



16305 callilepis Greene 



16306 candidissimns Greene 



16307 canovirens Rydb. 



16308 ciliolatns (Henderson) Heller 



16309 clavatus (Jones) Heller 



16310 crassicaulis Greene 



16311 crispus L. 



16312 cymosus Greene 



16313 diffusus (Eastwood) Heller 



16314 discolor (Muhl.) Nntt. 



16315 Drummondii (T.&G.) Coville 



16316 acanlescens (A. Gray) 



Coville 



16317 edulis (Nutt.) Greene 



16318 Flodmanii Rydb. 



16319 foliosns Hook. 



16320 fontinalis Greene 



16321 Graham! (A. Gray) Greene 



16322 Hallii (A. Gray) Heller 



16323 hesperius (Eastwood) Heller 



16324 Hillii (Canby) Porter 



16325 Hookerianus (Nutt.) Heller 



16326 hydrophilus Greene 



16327 inamoenus Greene 



16328 Kelseyi Rydb. 



16329 lanceolatus L. 



16330 Lecontei (T. & G.) Pollard 



16331 leiocephalus (D. C. Eaton) 

 (C. Eatoni A. Gray) [Heller 



16332 Mohavensis Greene 



16333 inuticus (Michx.) Pers. 



16334 Nebraskensis Britton 



16335 Neo-Mexicanus (A. Gray) 



16336 Nevadensis Greene [Greene 



16337 nidulus (Jones) Heller 



16338 nutans L. 



16339 Nuttallii (DC.) Pollard 



16340 occidentalis Nutt. 



16341 ochrocentrus (A.Gray)Greene 



16342 odoratus (Muhl.) Porter 



16343 Parryi (A. Gray) Greene 



