ADDITIONAL SPECIES. 289 



EUPHORBIA, (p. 194.) 



4. E. esula, umbel of numerous forked branches ; bracteas near- 

 ly heart-shaped; all the leaves uniform, oblong-lanceolate, en- 

 tire ; nectaries rhomboid with two horns; capsule smooth. 



Hab. Birgham Haugh, Mr R. D. Thomson. July. 11 



CAREX, (p. 195.) 



24.* C. riparia, stigmas 3; catkins erect, cylindrical, acute, 

 with taper-pointed scales ; fruit ovate, smooth, tumid, with a 

 cloven beak. (Stem 3 feet, acutely triangular, rough on the 

 edges ; leaves broad, long, rough-edged ; bracteas foliaceous, very 

 long, without sheaths ; fertile catkins 3, stalked, large, the sterile 

 ones 3 or more, sessile, subtriangular, acute, with long acutely 

 pointed scales.) 



Hab. Watery places. At the river side on Gainslaw- 

 haugh, plentiful, Mr John Barnes. May, June. 7/ 



SALIX, (p. 210.) 



The reader is desired to erase S. Andersoniana, (p. 216.), and 

 in its place to insert the following : 



13. S. Forsteriana, stem erect; branches minutely downy; 

 leaves elliptic-obovate, acute, crenate, slightly downy, glaucous 

 beneath ; stipules vaulted ; germen stalked, awl-shaped, silky ; 

 style as long as the blunt notched stigmas. 



Ilab. In a hedge near Mount-Pleasant, Durham. May. 



POPULUS, (p. 211.) 



4. P. canescens, leaves roundish, deeply waved, toothed, hoary 

 and downy beneath ; fertile catkins cylindrical ; stigmas 8. Grey 

 Poplar. 



Hab. In some natural wood on the banks of the Dye op- 

 posite the village of Longformacus, a small tree of this 

 species was noticed, in the autumn of 1830, by the Rev. 

 A. Baird and myself. 

 VOL. ii. N 



