1922] SARGENT, FIRST FIFTY YEARS OF THE ARNOLD ARBORETUM 



139 



Liquidambar 

 Parrotia 

 Parrotiopsis 

 Sinowilsonia 



Eucommiaceae 



Eucommia 



Platanaceae 



Platanus 



Rosaceae 



Amelanchier 



Cercocarpus 



Chaenomeles 



Chamaebatiaria 



Cotoneaster 



X Crataegomespilus 



Crataegus 



Cydonia 

 Dry as 



Exochorda 



Holodiscus 



Kerria 



Maddenia 



Malus 



Mespilus 



Neillia 



Neviusa 



Osmaronia 



Pentactina 



Peraphyllum 



Petrophytum 

 PJiotinia 



Physocarpus 



Potentilla 



Prinsepia 



Prunus 



Pyracantha 



Pyrus 



Rhodotypus 



Rosa 



Rubus 



Sibiraea 



Sorbaria 



X Sorbaronia 



X Sorbopyrus 



Sorbus 

 Spiraea 

 Stephanandra 

 Stranvaesia 



Leguminosae 



Amorpha 



Calophaca 



Campylotropis 



Caragana 



Cercis 



Cladrastis 



Colutea 



Coronilla 



Cytisus 



Desmodium 



Genista 



Gleditsia 



Gymnocladus 



Halimodendron 



Hedysarum 



Indigofera 



X Laburnocy tisus 



Lab 



Lespedeza 



Maackia 



Petteria 



Robinia 



Sophora 

 Ulex 



Wistaria 



urnura 



Rutaceae 



Evodia 



Orixa 



Phellodendron 



Poncirus 



Ptelea 



Ruta 



Zanthoxylum 



Simarubaceae 



Ailanthus 

 Picrasma 



Meliaceae 



Cedrela 



