220 



ther westward and northwestward. Although the two plants 

 sometimes grow near each other here at Ithaca, they can be 

 distinguished at a glance. 



I am not aware that Carex timbellata or the var. vidua ex- 

 tend beyond the Mississippi in the United States. The plant 

 referred to the species in my synopsis (Proc. Amer. Acad. Arts 

 and Sci. xxii. 125) from Oregon, Henderson (the collector should 

 have been given as Howell) is C. dejlexa var. Boottii, Bailey. 

 Some of the varieties of C. dejlexa are very near C, timbellata 

 var, vicijia, hut they are distinguished, among other things, by the 



leafy bracts and the more uniformly peduncled spikes. 



L. H. Bailey. 



Notes on Two RhododendronSi 



Rhododendron canescens (Michx.), {A.r^alea caneseens, 



Michx. Fl. I. p. 150 (1803) ; Pursh, Fl i. p. 152 (1814)-— I^i ^^'^ 

 Synoptical Flora Dr. Gray has merged this old plant of Michaux 

 into R. nudijlorum, but it surely has characters enough to enable it 

 to hold a rightful place between that species and R^ calendula- 

 cetim. In fact it is more nearly allied to the latter, from which it 

 differs in its smaller corolla, of a bright rose color, with shorter 

 tube, less ample and spreading limb, and slender, less exserted 

 stamens. The corollas externally are clothed, as well as the pe- 

 duncles, with short, gland-tipped hairs,, not viscid to the touch; 

 calyx-teeth minute, or sometimes one or two of them conspicu- 

 ous and oval or oblong in shape; leaves roundish-obovate, or 

 narrower and almost elliptical, pale, softly tomentose-pubcscent 

 beneath, less so above, or in some cases glabrate, except the mar- 

 gins, mid rib and veins. In favorable situations it attains the 

 height of 10 to 12 feet. 



From 7?. nudijloriim it is distil 



t> 



_ lished in the corolla by its 

 color, peculiar fragrance, shorter tube, narrowed toward the base 

 and beset with short gland-tipped hairs, and more equal divisions 

 of the limb, and by the pale hue of the tomentose-pubescent 

 leaves, and a more erect habit of growth. As in R. nudifiorum, 

 the flowers appear both before and with the leaves. 



First collected by Michaux *' on rivulets in South Carolina," 

 and later by Pursh in the mountains near ** Cacopoon (Capon ?) 



