sinuata minima. 
speciosa, 3 10 53 58 
Onopordum Acanthium, 1 
Onosmodium hispidissimum, (O. carolinianum), 16 45 48 
61 84 99 
molle, (O. carolinianum molle), 45 61 
virginianum, 82 
Opuntia Rafinesquii, 58 61 105 
Orobanche ludoviciaua, (Aphyllon ludovicianum), 55 
unifiora, (4phyllon uniflora), 17 18 32 42 45 55 56 
Osmorhiza Claytoni, (O. brevistylis), 14 17 45 58 61 65 98 
longistylis, 14 16 17 45 58 65 95 98 99 110 
Ostrya virginiana, 33 42 45 4658 65 79 81 109 
Oxalis corniculata, 7 
atropurpurea, 7 
Dillenii, 5 14 17 19 29 32 41 42 109 
stricta, 17 45 
violacea, 3 1417 30 32 33 42 45 58 61 
alba, 32 58 
Oxybaphus linearis, (O. angustifolium), 45 56 
nyctagineus, 31 2 45 58 101 
oblongifolium, 56 
Oxypolis rigidior, ( 7zedmannia rigida), 20 58 72 
Panax quinquefolia, (Azalia guinguefolia), 33 45 58 65 72 
98 109 110 
Parietaria pennsylvanica, 32 46 108 
Parthenium Hysterophorus, 84 
integrifolium, 17 45 50 61 98 
repens, 10 33 45 48 5861 
Passiflora lutea, 14 17 18 33 41 58 
Pastinaca sativa, 48 
Pedicularis canadensis, 20 33 45 58 61 99 
Penthorum sedoides, 7 14 17 32 39 48 57 72 91 94 102 
Pentstemon hirsutus, (P. pubescens), 14 17 18 29 32 45 58 
108 
laevigatus, 18 65 
Digitalis, 17 32 98 
Perilla frutescens, (P. ocmyotdes), 17 58 
Petalostemon candidum, 21 32 44 45 50 58 109 
purpureum, (P. violaceum), 21 29 32 44 45 57 58 79 
villosum, 58 61 
Phacelia bipinnatifida, 108 110 
Purshii, 5 56 58 108 
Phaseolus polystachyus, (P. perennts), 33 
Phlox divaricata, 14 1617 32 33 45 58 65 
glaberrima, 57 58 
paniculata, 17 48 56 58 
pilosa, 17 30 32 40 58 72 99 108 
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