108 Journal of the Mitchell Society \_Nov. 



Azalea niidiflora L. 



Rhododendron Vaseyi Gray. 



Rhododendron maximum L. 



Rhododendron catawbiense Michx. 



Rhododendron carolinianiim Rehder. 



Rhododendron minus Michx. ^ 



Menziesia pilosa (]\richx.) Pers. 



Kalmia angustifolia L. 



Kalmia Carolina Small. 



Kalmia latifolia L. 



Leucothoe Catesbaei (Walt.) Gray. 



Leucothoe recurva (Buckley) Gray. 



Leucothoe recemosa (L.) Gray. In Ayres and Ashe's 



list. 

 Dendrium prostratum (Loud.) Small. 

 Dendrium Hugeri Small. 

 Chamaedaphne calyculata (L.) Moench. 

 Pieris floribunda (Pursh.) B. & H. 

 Xolisma ligustrina (L.) Britton. Ayres and Ashe's 



list. 



° In Rhodora 14 :07, 1012, Alfred Rehdor sets forth the interesting fact, 

 discovered at the Arnold Arboretum, that what we have heen calling Rhodo- 

 dentlron pinictattiin is in reality composed oi two distinct species, the real R. 

 punctatum Andr., lower altitudes in N. C, S. C. (?), Tenn., Ga. and Ala., 

 and an unnamed form seemingly confined to the higher altitudes in North 

 Carolina. To this last Rehder gives the name R. cniolhiianiim, and he sup- 

 plants the name piinriatiim of Andrews for minus of Michaux which antedated 

 it for the low-altitude form. After giving a detailed description of his new 

 species Rehder says: "Rhododendron rdrolinkniiim is easily distinguished 

 from R. minus by the short and wide tube of the corolla as long as, or slightly 

 shorter than the lobes : the corolla is usually not spotted and is glabrous 

 outside, the leaves arc generally broader, less pointed and of thicker texture, 

 the branches are shorter and stouter forming a compact, usually low shrub 

 and the flowers appear several weeks earlier, before the young leaves 

 are out. As an ornamental plant it is superior to R. minus and has proved 

 perfectly hardy at the Arnold Arboretum and at General Weld's garden at 

 Dedham where a large number of plants nave been established for several 

 years," 



He also says that R. rnrnlininnum "forms a low compact bush with 

 broad leaves, fiowering after the middle of May before the development of 

 the shoots of the year, while the oliier plant (R. minus\ which agrees exactly 

 with the form figured by Andrews and cultivated formerly in Euro)iean 

 gardens, is a taller loose-growing shrub with narrower leaves, and it flowers 

 about four weeks later, when the young sfioots springing from below the in- 

 florescence are already developed and overtop it. Generally tlie differ- 

 ences as regards habit, shape of the leaves, time of flowering and also the 

 shape of the corolla are about the same as those between A', cninuhiriisr and 

 R. maximum, only in a lesser d("gree. In examining the available herbarium 

 material I find tiiat both forms are nativi> to the Southern .\tlanfic States: 

 the low compact form being appar(>ntly restricted to the high mountains of 

 North Carolina, while the other form inhabits lower altitudes and has a 

 wider distribution." 



