RHODODENDRON. DECANDRIA. MONOGYNIA. 425 



(i. glauciim M i c h* : leaves glaucous beneath. M i c h, 

 Fl. 1. c. AzAiiEA glauca Pursh Fl, I, p. 154. A. vi^- 

 cosa ^, Jloribunda Jli t. Kcio. 1, c. 



Hab. In swamps; rare. July. 



This variety is made a separate species by P urah^ but it 

 appears to be scarcely distinct from A. viscosa. 



3. R. calendulaceuin* : flowers somewhat naked •, leaves 

 oblon;^, pubescent ou both sides, at length hairy ; flowers not 

 viscous; teeth of the calyx oblong; tube of the corolla hairy, 

 shorter than the segments. Azalea calendulacea Mich. 

 FLl.p.\5l. Pursh Fl.]. p. 15\. Elliott Sk. I. ^. 

 238. Roem. S^ Schult. IV. p. 473. A. nudiflora x. coc- 

 cinea Jit. Ke:o. I. p. 202. 



A shrub 2 — ^6 feet high. Leaves deciduous. Flowers large, 

 bright flame-colour, or bright yellow. 



Had. In Pennsylvania. May. Muhlenberg. 



Pursh remarks, that this is the handsomest shrub in 

 North-America. It is, by some Botanists, considered as a va- 

 riety of Azalea fionlica, a native of the Levant. 



4. R. arborescens^' : flowers leafy ; leaves obovate, ra- 

 ther obtuse, smooth on both sides, glaucous beneath, ciliate 

 on the margin; nerve almost smooth; flowers not viscous ; 

 tube longer than the segments ; caiyx leafy, with the segments 

 oblong, acute ; filaments exserted. Azalea arborescens 

 Pursh FL I. p. 153. Roem. ^ Schult, IV. p. 474. 



A shrub 10 — 20 feet high. Flowers large, rose-colour. Scales 

 of the flower-buds large, yclowish-brovvn, surrounded with a 

 fringed white border. Ph. 



Hab. In rivulets near the Blue Mountains, Pennsylvania. 

 Pursh. 



5. R. nitidum* : flowers leafy; branches somewhat 

 smooth; leaves oblanceolate, submucronate, coriaceous, 

 Smooth on both sides, shining above ; nerve bristly beneath ; 

 margin revolute-ciliate ; flowers viscous ; tube a little longer 

 than the segments ; calyx very short ; filaments exserted. 

 Azalea nilida Pursh Fl. I. p. 153. Roem. ^"Schult, 

 JV. p. 378. 



Leaves dark green and shining, smaller than in any other spe- 

 cies. Flowers white, with a red tinge. Ph. 



Hab. In deep mossy swamps on mountains. Pennsylvania to 

 Virginia. Pursh. 



6. R. hispidum* .-flowers leafy ; branches straight, very 

 hispid ; leaves long-lanceolate, hispid above, smooth beneath, 

 glaucous on both sides ; nerve beneath bi istly ; margin c\ 



54 



