1922] SARGENT, FIRST FIFTY YEARS OF THE ARNOLD ARBORETUM 



141 



Lythraceae 



Decodon 



Nyssaceae 



Davidia 



Nyssa 



Araliaceae 

 Acanthopanax 

 Aralia 



Echinopanax 

 Hedera 



Cornaceae 



Cornus 

 Helwingia 



Clethraceae 



Clethra 



Pyrolaceae 



Chimaphila 



Ericaceae 



Andromeda 



Arctostaphylus 



Arctous 



Bruckenthalia 



Calluna 



Cassiope 



Chamaedaphne 



Chiogenes 



Daboecia 



Enkianthus 



Epigaea 



Erica 



Gaultheria 



Gaylussacia 



Kalmia 



Ledum 



Leiophyllum 



Leucothoe 



Loiseleuria 



Lyonia 



Menziesia 



Oxydendron 



Phyllodoce 



Pieris 



Rhododendron 



Tripetaleia 



Tsusiophyllum 



Vaccinium 



Zenobia 



Sapotaceae 

 Bumelia 



Ebenaceae 

 Diospyros 



Styracaceae 



Halesia 



Pterostyrax 

 Styrax 



Symplocaceae 



Symplocos 



Oleaceae 



Chionanthus 



Fontanesia 



Forestiera 



Forsythia 



Fraxinus 



Jasminum 



Ligustrum 



Syringa 



Loganiaceae 



Buddleia 



Apocynaceae 



Vinca 



Asclepiadaceae 



Marsdenia 

 Periploca 



Boraginaceae 



Ehretia 



Verbenaceae 



Callicarpa 

 Caryopteris 

 Clerodendron 

 Vitex 



Labiatae 



Elsholtzia 



Hyssopus 



Lavandula 



Perowskia 



Teucrium 



Thymus 



