rigida, 26 32 56 58 99 
rugosa, 48 
serotina, 11 14 32 62 104 
gigantea, 24 36 
speciosa, 16 17 18 30 58 
angustata, (.S. sfeciosa rigiduscula), 98 
ulmifolia, 14 18 32 41 48 50 58 98 
Sonchus arvensis, 1 84 
asper, 17 65 
oleraceus, 65 
Specularia perfoliata, 14 16 35 45 61 65 68 
Spergula arvensis, 57 
Spermacoce glabra, 36 45 58 65 84 
Spermolepis patens, (Leptocaulis patens), 10 58 91 92 102 
Stachys asper glabra, 65 81 
cordata, 48 
hyssopifolia, 72 
palustris, 32 45 50 65 81 108 109 
tenuifolia aspera, (S. aspera), 31 65 72 
Staphylea trifolia, 14 17 18 32 33 45 58 62 99 
Steironema ciliatum, 17 30 42 57 58 72 
lanceolatum, 17 45 48 57 82 
angustifolium. 
hybridum. 
quadrifloram. GS longifolium), 17 57 58 82 
Stellaria longifolia, 174857 - 
media, 19 84 
Stenanthemum angustifolium, 58 
Strophostyles helvola, (.S. amgulosa), 14 17 32 33 45 48 58 
65 86 104 
missouriensis, (.S. azgulosa missouriensts), 
65 106 
pauciflora, 1 6 17 96 98 101 104 
Stylophorum dipbyllum, 53 58 60 61 108 109 110 
Stylosanthes biflora hispidissima, (.S. elatior), 17 32 35 58 
61 69 79 109 
Symphoricarpos orbicularis, (S. valgaris), 14.17 32 36 41 
45 109 
Taenidia integerrima, (Pimpinella integerrima), 32 43 45 
58 61 80 
Talinum parviflorum, 61 
teretifolium, 10 57 58 61 79 
Tanacetum vulgare, 41 
Taraxacum officinale, (common. ) 
Tacoma radicans, 14 30 41 45 82:91 104 105 108 109 
Tephrosia virginiana, 32 45 50 58 99 
Teucrium canadense, 14 17 41 45 65 72 102 105 
occidentale, 110 
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