INDEX TO THE ADDITIONS AND CORRECTIONS 



Acrolasia, 1 128 

 ADDER'S TONGUE, 1141 

 A<lo})<>(ion. 1141 

 Agoseris, 1111 

 Agropyron, 1112 

 Aira, ill 1-2 

 Alliuiu, 1114 

 Allorarva, 1130-1 

 Alopeeurus, 1111 

 Alsin.op.sis, 1119 

 Ambylirion, 1114 

 . \inorpha, 1124 

 Anelsonia, 1122 

 Anemopsis, 1115 

 Aninolotus, 112k 

 Aquilegia, 1120 

 Arabis, 1122 

 Asparagus. 1114 

 Astragalus, 1126 

 Audibertiella, 1132 

 \\yris, 1119 

 Berberis, 1120 

 BLOODROOT, 1121 

 Boiscluvalia, 1128 

 Braxilia, 1129 

 Calochortus, 1114 

 CALTROP, 1126 

 Carex, 1113-4 

 Cartiera, 1123 

 Castilleja, 1137-8 

 Ceanothus, 1126 

 Celtis, 1116 

 Cenchrus, 1111 

 Centaurea, 1141 

 Chaenactis, 1140 

 Chaetochloa, 1111 

 Chamaesyce, 1126 

 Chamomilla, 1140 

 Chenopodium, 1119 

 Chrysothamnus, 1139 

 Cleomella, 1123 

 Colutea, 1125 

 Comandra, 1138 

 Conium, 1129 

 Corylus, 1115 

 Cosmos, 1139-40 

 CROWBERRY, 1127 

 CROWBERRY FAMILY, 1127 

 Cynthia, 1140 

 Danthonia, 1112 



Daucus, 1129 

 Deschampsia, 1111 

 Diplotaxis, 1122 

 Dodecatheon, 1129 

 Draba, 1122 

 ELECAMPANE, 1139 

 Elyraus, 1113 

 EMPETRACEAE, 1127 

 Empetrum, 1127 

 Epilobium, 1128 

 Equisetum, 1141 

 EVENING STAR, 1127 

 Erxlebenm, 1129 

 FALSE CALTROP, 1126 

 FALSE FOUR-O-CLOCK, 1119 

 Fendlera, 1123 

 Gaillardia, 1140 

 Galega, 1125 

 Grindelia, 1138 

 Heterothrix, 1123 

 Hibiscus, 1127 

 Homalobus, 1126 

 Idahoa, 1122 

 Inula, 1139 

 Kochia, 1119 

 Lappula, 1130 

 Latliryus, 1126 

 Lesquerella, 1121 

 LIZARD 'S-TAIL FAMILY 1115 

 Lotus, 112J 

 Lupinus, 1124 

 Malva, 1127 

 Afatricaria, llJfO 

 Melandrium, 112Q 

 Menzelia, 1128 

 Mertensia, 1131 

 MESQTTITE, 1124 

 Mimulus, 1137 

 Monothrix, 1140 

 Naiocrene, 1119 

 Norta, 1121 

 Nuttallia, 1127-8 

 Ochrocodon, lllk 

 Oenothera, 1128 

 Onopordon, 1141 

 Ophioglossum, 1141 

 Opuntia, 1128 

 Oreocarya, 1130 

 Orthilia, 1129 

 Orthocarpus, 1138 



Oryzopsis, 1111 

 Ostrya, 1115 

 Panicularia, 1112 

 Panicum, 1111 

 Parosela, 1125 

 Pedicularis, 1138 

 Pediomelum, 1124 

 Pennellia, 1123 

 Pentstemon, 1132-7 

 Persicaria. 1116-9 

 Petradoria, 1139 

 Phoenicaulis, 1122 

 Physaria, 1121 

 Poa, 1112 



POISON HEMLOCK, 1129 

 Polygqmim, 1116 

 Psoralidium, 1124 

 Pscrodendron, 1125 

 Pteryxia, 1129 

 Ramischia, 1129 

 ROSE MALLOW, 1127 

 Rumex, 1116 

 Salix, 1115 

 SALTBUSII, 1140 

 Sanguinaria, 1121 

 SAURURACEAE, 1115 

 SCREW BEAN, 1124 

 SCREW POD, 1124 

 Sedum, 1123 

 Selaginella, 1141 

 Senecio, 1140 

 Sitanion, 1112-3 

 Soli dago, 1139 

 Sophora, 1124 

 Sporobulus, 1111 

 Strombocarpa, 1124 

 Tetradymia, 1140 

 Thelypodiopsis, 1123 

 Tiquilaopsis, 1130 

 TORMILLO, 1124 

 Tradescantia, 1114 

 Valota, 1111 

 Vernonia, 1138 

 Veronica, 1137 

 WILD FOUR-O-CLOCK, 1119 

 Whipplca, 1123 

 WOODY ASTER, 1139 

 Xylophacos, 1126 

 YERBA MANSA, 1115 



KEY 



TO THE 



ROCKY MOUNTAIN FLORA 



BY 



P. A. RYDERG, PH.D. 



Curator, New York Botanical Garden 



Published by the author. 



Price $1.60 post paid. 



This is a separate reprint of the keys found in the first edition of this book, boiuid in 

 flexible covers, to make it a desirable and convenient pocket fieldbook. Including a 

 Glossary and the Index, it is a book of 306 pages, 5X8 inches, and y 2 inch thick. 



