INDEX 
Spermolepis ................ 160 
Sphenopholis ............... 32 
Spiranthes ................. 50 
Spirodela ................0.0. 16 
Sporobolus ................. 43 
SIECUGS « eeuse pal heen ewe races 120 
Stanleya. s:i5% sacar yew eens 60 
Staphylea .................. 153 
Staphyleaceae .............. 153 
Steironema ................. 93 
Stenosiphon ................ 148 
Stenophyllus ............... 18 
SULONOCUS: once el sce aac mney 172 
Stephanomeria ............. 194 
Stipa: ¢ ove cies nis we ee eran ewes 46 
Strawberry ..............005 125 
Strobilophyta .............. 5 
Strophostyles .............. 139 
SUMACH 6 sure eesteeia ve Snare Vass 155 
Sun-flower ................. 182 
Symphoricarpos ............ 165 
Syndesmon ..............05 54 
SYNHETIS® asc ssqaeare eae ena 113 
Syntherisma ................ 41 
Talinum 2 ssceiswex saa wa nes 70 
Taraxacum ..............-.. 194 
Tea, New Jersey............ 152 
Tetraneuris ................ 187 
TeucriuM. «29 i0i seve sa gene es 118 
Thalamiflorae .............. 51 
THaleSia* = shana arwiegacaaacene way 115 
Thalictrum ................. 53 
PRASDIUM: sees ons Henn au-aiow v4.6 161 
Thelesperma ............... 184 
Thelypodium ............... 60 
Thermopsis ................ 181 
THIStIOS® 6.4 dite sae gaie soa wees 192 
Thiaspl. 2% saves wey seawas 60 
TICKSCC | os ik d ae encieace a nies 183 
Tiliaceae ........ ce eee eae 89 
TMEMGUHY - sicdienars sa deat esse owes 4, 44 
Toadflax .udicesiseuasaes 111, 154 
Townsendia ............020. 174 
Tradescantia ...........0... 13 
Tragopogon .............005 194 
Triadenum ............e cece 87 
EPLDMIUS,, | ots 4.2Ayseis-te-cascn cae ovee 82 
TTICUSDIS, io ii scia.aiie aonaoe Wace anes 34 
TTifOliwM «5.5 saxad.s ea sonia e acne 132 
Trighochin. os ssewees weaves 7 
RPMI: | cui.g oS weds oes Aish ea one 12 
Triosteum .............0000. 165 
THIDIASIS. esses és ayes 0g ase dare 34 
TripsacumM:. 242. ose%.iwes ves 48 
217 
Tumble-weed .............. 71, 74 
MOUPTICIS nica case amaty dans atenrlnaee 63 
PYDHO ssewes keen eta setae 16 
Typhaceae ..............005 16 
Ulmaceae .............000+4 90 
UMS! «ste cee cart'e oak macy eases 90 
Umbellales: «ivi aseevs gan reas 158 
Umbelliferae ..........,.... 158 
ETUC S| sc caua dg: Sake, Gacnte eg eeaientcen 91 
UPtiCaCeae .. .6caiee cease vans 91 
Urticastrum 5 isnsaes saws esse 92 
Utricularia: 2scsees ses gakesed 115 
MPIC CATIA siaseiive ¢.guiscsosacvrmce enon 66 
VABIERAL, «sassy. ccecnineie gate aie stew 12 
Velvet leaf ................. 90 
Venus’ looking-glass ........ 167 
Verbascum ..............0.. 111 
VEPDENE noeius ssw aed vawas as 116 
Verbenaceae ............... 116 
Verbesing «isiiaaeveasus caus 183 
MOPNONIAs B.ecis is sraise sew eravanar dn 4 168 
Vernonieae ...........0e eee 168 
MOYFODIGA: siete iace aed wacbogss GRaY von 113 
MePValll” ¢ gi sin aed o each tex 117 
Veto sscaeav te cad vas suka hes 141 
Viburnum .................. 165 
WAGIAs es Sa csncie ye aen-s atts c te hahaa 141 
NY Ola: ear sate danse weet yew anaaee s 87 
Violaceae: vec essswdevas eaves 87 
MIOIOES = oss Joos disrine aenece dae ne 88 
Violet, dog’s tooth........... 11 
Virginia creeper ............ 155 
WVikaceae: sina vee geees a Mee os 152 
WAGES) gene statistic wanened auece cee 152 
Wake robin ................ 12 
Walnut, black .............. 155 
Washingtonia .............. 160 
Water hemlock ............. 161 
Water-parsnips ............. 161 
Water-plantain ............. 7 
Willow -o.0cixseneun ta yas 384i 0.3 69 
Wintergreen ............... 95 
Wolf-berry ..............0.- 165 
"W-OlMa) 2.x eu sends a see eve lew es 16 
Wormwood ..........--...05. 189 
MANMCHIUM wisie ce cewen a cone 186 
Xanthoxylem ............... 82 
WUCCA. seeds sey ees gue Ree ORES 12 
Zannichellia ................ 9 
AZANIA ens nese aaa ed Awa 47 
AZAR 6s ierisna se wseraien aig ae ae ea eae Y 161 
ZYZAGONUS sveseenn eee ves ews 10 
Zygophyllaceae ............. 82 
