OTHER AMERICAN PLANTS. 117 



not allowed to dry up. Prom its fragrance and late 

 blooming, it is a desirable plant. There are nu- 

 merous varieties, and this species is the parent of 

 many hybrids. All are hardy. 



Some of the best are : rubescens, do. grandiflora, 

 floribunda, penicillata, do. picta. 



Azalea glauca 



Is only a variety of A. viscosa, with pale glaucous 

 foliage ; not uncommon. 



Azalea nitida 



Is also a variety of A. viscosa, of dwarf habit, 

 with dark green, shining leaves, and white, clammy 

 flowers, tinged with pink. 



Azalea calendulacea. 



A shrub, growing from five to ten feet high, with 

 haiiy leaves and large, flame-colored or orange, scent- 

 less flowers ; native of the Middle and Southern 

 States. It is common m gardens, is hardy, and 

 flowers freely in May, the blossoms appearing with 

 the leaves. There are many varieties, of which we 

 may mention : Morterii, fulgida, calendulacea coa- 

 cinea, do. crocea, do. elegans, do. eximia, do. flam- 

 mea, do. superba, ignescens, triumphans. 



Azalea pontica. 



A native of Asia Minor and the Caucasus, form- 

 ing a tall shrub, with bright yellow flowers in the 



