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ADDENDA. 



TETRANDRIA. To genus No. 78, page 85, add the 

 following species: 



2. Ludwigia hirsuta; erect, branched, hirsute; 

 leaves alternate, oblong, sessile, every where 

 hirsute, peduncles one-flowered, axillary, cap- 

 sules globose-tetragonous, crowned, base bi- 

 bracteate. — Lamark. 



L. pilosa, Walt. 



In Jersey, a mile from the Delaware, opposite South-street; 

 Mr. Collins. Perennial. July, August. 



PENTANDRIA. To genus No. 99, page 106, add 

 the following species : 



4. Convolvulus stans ; erect, tomentose, leaves ob- 

 long-lanceolate, acuminate-cordate ; obtuse be- 

 hind, peduncles one -flowered, bractes ovate- 

 acute, segments of the calix lanceolate, stem 

 flower-bearing below. — Pursh, 



Calystegia tomentosa, Pursh. 



Convolvulus stans, Mich. 



About eight inches high. Flowers white. In Jersey, east 

 of Haddonneld; Mr. Collins. Perennial. June, July. 



