XXIII 



Sitanion (squirreltail), G107 Continued. 



breviaristatuin. See S. jubatum. 



brevifolium. See S. hystrix. 



californicum. See S. hystrix. 



ciliatum. See S. hystrix. 



cinereum. See S. hystrix. 



elyinoides. See S. hystrix. 



glabrum. See S. hystrix. 



hanseni (Hansen squirrel tail), G107. 



hystrix (bottle-brush s.), G107. 



insulare. See S. hystrix. 



jubatum (big squirrel tail), G107. 



latifolium. See S. hystrix. 



longifolium. See S. hystrix. 



marginaturu. See S. hystrix. 



minus. See S. hystrix. 



molle. See S. hystrix. 



montanum. See S. hystrix. 



multisetum. See S. jubatum. 



planifolium. See S. hanseni. 



pubiflorum. See S. hystrix. 



rigiduin. See S. hystrix. 



rubescens. See S. hanseni. 



strigosuin. See S. hystrix. 



velutinum. See S. hystrix. 



villosum. See S. jubatum. 

 skookumroot. See peony, Browns. 

 skunkberry. See honeysuckle, bearberry. 

 skunkbrush. See skunkhush. 

 skunkbush (Rhus trilobata), B129. 

 skunkcabbage (Spathyema foetida), W801. 



yellow (Lysichiton camtschatcensis), W201. 

 skunkcabbage. See false-hellebore, western, 

 skunkieaf, blue (Polemonium pulcherrimum) , 



W153. 



skunkieaf, white. See polemouium, white. 

 skunkweed. See polemonium, white; skunkieaf, 



blue. 



sleepygrass (Stipa robusta) , Q120. 

 smartweed, alpine. See bistort. 

 snailclover. See alfalfa. 

 snake-lily. See iris, 

 snakeweed (Gutierrezia) 



broom (G. sarothrae), B85. 

 snakeweed. See waterhemlock. 

 sneezeweed (Helenium) 



Hoopes. See orange s. 



orange (H. hoopesii) , W88. 



western. See orange sneezeweed. 

 snowberry (Symphoricarpos, white-fruited spp.), 

 B151. 



common (S. albus), B151. 



longflower (S. longiflorus) , B1B1. 



mountain (S. oreophilus), D151. 



spreading (S. mollis), B151. 



trailing. See spreading snowbeny. 



whortleleaf (S. vaccinioides), B151. 

 snowbrush (Ceanothus velu(inus), B47. 

 snowbrush. See false-azalea. 

 soapbloom, red (Ceanothus sanguineus), B46. 

 soapbloom. See ceanothus. 

 soapgrass. See beargrass. 

 soaproot, poison-. See deathcamas. 

 soap weed, small (Yucca glauca), B157. 

 soapweed. See yucca, soaptree. 

 Solidago (goldenrod), W181. 



elongata (creek g.), W181. 



parry i, W181. 



pumila, W181. 



soopolallie. See buffaloberry, russet. 

 soopoolalia. See buffaloberry, russet. 

 Sophia (tansymustard), W182. 



Chirurgorum. See S. parviflora. 



incisa (western tansymustard), W182. 



parviflora (flixweed), W182. 



sophia. See S. parviflora. 

 sourclover. See sweetclover, annual yellow. 

 Spathyema foetida (skunkcabbage), \V201. 

 spatlum. See bitterroot. 



speargrass. See bluegrass; bluegrass, Kentucky, 

 spearmint (Mcntha spicata), Wl%5. 

 spear wort 



creeping (Ranunculus flammula reptans), 

 W161. 



lesser (R. flammula), W161. 

 Sphenosciadiumcapitellatum(woollyhead-parsnip), 



W62. 

 Spiraea (spirea), B150. 



arbuscula. See S. densiflora. 



corymbosa lucida. See S. lucida. 



Spiraea (spirea), B150 Continued. 



densiflora (snbalpine spirea), B150. 



douglasii (Douglas s.), B160. 



helleri. See S. densiflora. 



lucida (birchleaf spirea), B160. 



menziesii (Menzies s.), B1BO. 



tomentosa (hardback), Bl 50. 

 spirea (Spiraea), B150. 



birchleaf (S. lucida), B1SO. 



Douglas (S. douglasii), B160. 



Menzies (S. menziesii), B150. 



subalpine (S. densiflora), Bl 60. 

 Sporobolus (dropseed), G108. 



airoides (si kali sacaton), G109. 



black. See black dropseed. 



confusus. See S. microspermus. 



cryptandrus (sand dropseed), G110. 



interruptus (black d.), Gill. 



macrus (Mississippi d.), 6WS. 



microspermus (six weeks d.), G112. 



sixweeks. See sixweeks d. 



tricholepis. See Blepharoneuron tricholepis. 



virginicus (seashore dropseed), O108. 



wrightii (sacaton), G113. 

 spottedhemlock. See waterhemlock. 

 squawberry. See skunkbush. 

 squawbush. See skunkbush. 

 squawcarpet (Ceanothus prostratus), B45. 

 squawgrass. See beargrass; wild-rye, beardless. 

 squawlettuce. See waterleaf, western. 

 squawroot. See yampa. 

 squirreltail (Sitanion), G107. 



big (S. jubatum), O107. 



bottlebnish (S. hystrix), G107. 



Hansen (S. hanseni), G107. 

 squirreltail grass. See barley, foxtail. 

 staggerwort. See ragwort. 

 starweed. See starwort, tuber. 

 star wort (Alsine), W12. 



tuber (A. jamesiana), W12. 

 steeplebush. See spirea. 

 Stellaria. See Alsine. 

 Stenotus. See Aplopappus. 

 stickseed (Lappula), W101. 



thicket (L. floribunda), W101. 

 sticktight. See stickseed. 

 stinking willie. See ragwort. 

 stinkweed. See pennycress, field. 

 Stipa (needlegrass) , G114. 



columbiana (subalpine n.), G115. 



columbiana nelsoni, G11B. 



comata (needle-and-thread), G116. 



lettermani (Letterman needlegrass), G115. 



minor. See S. columbiana. 



neomexicana (New Mexican feathergrass), 



one. 



occidental's (western needlegrass), f!! 17. 



oregonensis. See S. occidentalis. 



pulchra (California needlegrass), G11S. 



robusta (sleepygrass), G120. 



"setigera" (of U. S. authors, not Presl). See 

 S. pulchra. 



spartea (porciipinegrass) , G114- 



tenacissima, Gil 4. 



thurberiana (Thurber needlegrass), G117. 



vaseyi. See S. robusta. 



viridula (green needlegrass), G121. 

 storksbill. See alfileria. 

 strawberry (Fragaria), W77. 



alpine (F. vesca), W77. 



blueleaf (F. glauca), W77. 



Chiloe (F. chiloensis), W77. 



Hautbois (F. moschata), W77. 



pine (F. ananassa), W77. 



Virginia (F. virginiana), W77. 



wood. See alpine strawberry. 

 Strombocarpa odorata (screwbean), B11Z. 



pubescens. See S. odorata. 

 sugargrass. See cottongrass, Arizona, 

 sulla (Hedysarum coronarium), W87. 

 sumac (Rhus), B1S9. 



lemonade. See skunkbush. 



poison-. See poison-sumac. 



Rocky Mountain (R. cismontana), Bi%9. 



three-lobed. See skunkbush. 



Utah (R. utahensis), E129. 

 sunflower (Hellanthus), WS04- 



common (H. annuus), Wtfft. 



little-. See little-sunflower. 



