497 



L. palustre, L. • Lodd. Bot. Cab. t. ofiO. Northern and 

 Arctic Regions. 



L. HUgustifolium, Ho?^t. 



L. longifolium, Hurt, 



L. odoratum, Hort. 



Var. dilatatum. 



t AZALEASTRUM. 



Rhododendron albiflorum, Hook. : Bot. Mag. t. 3670. 

 Northern Rocky Mountains and Oregon to British 

 Columbia. 



R. ovatum, Planch. China. 



Azalea ovata, Lindl. ; Bot. Mag. t. 5064. 



tt Azalea. 

 R. Albrechti, Maxim. Japan. 



R. arborescens, Torr. ; Garden and Forest 18cS8, 404, f. 64. 

 Mountain region from Pennsylvania to North 

 Carolina and Tennessee. 



Azalea arborescens, Pursh. 



A. fragrans, Bajin. 



R. calendulaceum, Torr. Pennsylvania to C4eorgia. 

 Azalea calendulacea, Miclijc. 

 A. pontica var. calendulacea, Pers. 



Var. flammea. Bot. Mag. t. 2143. 



Var. Morteri, Siveet Brit. Fl. Card. iv. t. 1(». 



"R. calendulaceum x red variety of R. nudiUorum." 



Many garden varieties and hybrids. 



