72 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 



appears that Dr. Watson had noticed one of the characters of the 

 var. psilostachyum, but he took no action. 



P. CONVOLVULUS L. A weed at the Main Life Saving Station. 

 J. Macoun; H. St. John, no. 1,217 (H). 

 FL, Fr. August. 



CHENOPODIACEAE. 



Chenopodium rubrum L. Common on the brackish beach of 

 Wallace Lake. J. Macoun; H. T. Gussow; H. St. John, no. 1,218 

 (H). 



Fr. September. 



C. ALBUM L. A weed at the Main Life Saving Station. J. Ma- 

 coun; (also as "lamb's quarter" M. p. 218 A); H. St. John, no. 

 1,219 (H). 



/'/.August. 



A narrow-leaved form is also established at the Main Life Saving 

 Station. H. St. John, no. 1,220 (H). 



Fl. September. 



Atriplex patula L., var. hastata (L.) Gray. Common on the 

 wet brackish beach of Wallace Lake. J. Macoun; H. T. Gussow; 

 H. St. John, no. 1,221 (H). 



Fr. September. 



CARYOPHYLLACEAE. 



Spergularia leiosperma (Kindberg) F. Schmidt. See Fernald & 

 Wiegand, Rhodora, xii. 162 (1910). Common on the brackish sandy 

 beach of Wallace Lake. J. Macoun (C. no. 21,151); H. T. Gussow 

 (E); H. St. John, nos. 1,222 and 1,223 (H). 



Fl. August. Fr. August and September. 



[S. CANADENSIS (Pers.) Don of J. Macoun and H. T. Gussow is S. 

 leiosperma.] 



SPERGULA ARVENSIS L. A weed at the Main Life Saving Station. 

 J. Macoun; H. St. John, nos. 1,224 and 1,225 (H). 

 Fl. August and September. Fr. September. 



Sagina procumbens L. Frequent in the wet dune hollows. 

 J. Macoun; H. St. John, no. 1,226 (H); H. S. Glazebrook (H). 

 Fl. June to August. Fr. July to August. 



