I^^DEX TO THE SPECIES. 



Page, 



aboriginum 66 



acutifolia 68 



ambigens (^9 



an G^ustifolia 50 



antuiiina 5^ 



aptera 76 



aquilina 57 



ar^entea 71 



attri ta - (J'"3 



betulifolia 64 



brevistylis 73 



bullata 75 



cinnamomea .,..,*,*. 74 



coahuilensis 61 



co|a:nata 62 



oonfinis 72 



crenata 63 



crennlata 74 



cuspidata 62 



t'y cloloma 75 



eU'gansi , . , , , ...... 72 



forniosa 59 



glauca 64 



isophylJa 58 



jujunrla 63 



laotissima 69 



lucida 66 



lutescens 72 



mogacarpa 68 



iTK^sochora 58 



monticola .' 64 



Vage. 



ncglecta 71 



iico-mexicaiia 68 



iiiteiis 70 



iiitida 71 



lUK-if era 75 



obscura 76 



obtusata 61 



ovalifolia 73 



padifolia 67 



pallida 70 



parvula 64 



persicifolia 67 



polyadenia 65 



prominnla, 58 



X)umila 61 



rhombifolia 59 



saligna 73 



sancta 63 



scutellata 62 



siniili:^ 65 



stramiiica 70 



subintegra 61 



subvustita 67 



tortnosa 60 



toxicodendron 66 



triptera 71 



undulata 62 



v(_!rrueosa 69 



villosula . 60 



wrightiana 58 



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