ST. JOHN: SABLE ISLAND. 65 



J. Macoun (C. nos. 77,185, 77,186, 77,163, 22,648); H. T. Gussow; 

 H. St. John, no. 1,152 (H). 

 Fl. August. 



E. palustris (L.) R. & S., var. glaucescens (Willd.) Gray. Even 

 more common than the preceding, but found sprawling on the drier 

 sand flats or in nearly bare dune hollows. J. Macoun (C. nos. 22,640, 

 22,647, and 77,187); H. St. John, nos. 1,153, 1,154, and 1,155 (H). 



Fl. August. Fr. August and September. 



Scirpus nanus Spreng. Found only by the brackish margins of 

 Wallace Lake. J. Macoun (C. no. 22,649); H. T. Gussow; H. Si. 

 John, no. 1,156 (H). 



Fl., Fr. September. 



S. americanus Pers. Common in the dune hollows. J. Macoun 

 (C. no. 22,632); H. T. Gussow; H. St. John, no. 1,157 (H). 

 FL August. 



S. acutus Muhl. (S. occidentalis (Wats.) Chase.) Brackish and 

 nearly fresh ponds near Wallace Lake. Some of the specimens have 

 been named S. validus but none seems to belong in that species. J. 

 Macoun (C. no. 22,633) is very young material. H. T. Gussow's 

 collection has well developed achenes only 2 mm. long, but the spike- 

 lets are borne for the most part in glomerules, so the plant is treated 

 as of this species. H. St. John, nos. 1,158 and 1,159 (H) do not have 

 long spikelets, but the achenes are large, 2.5 mm. long, and the 

 scales are long and overlapping. These specimens with a mingling 

 of characters of S. validus and of S. acutus raise the question as to 

 the distinctness of these two species. 



Fr. September. 



[S. OCCIDENTALIS (W T ats.) Chase is S. acutus.] 



[S. VALIDUS Vahl. The specimens from Sable Island that have 

 been called this seem better treated as S. acutus.] 



S. campestris Britton, var. paludosus (A. Nelson) Fernald. 

 Brackish ponds near Wallace Lake. J. Macoun (C. no. 22,634); 

 H. St. John, no. 1,160 (H). 



Fr. September 



Carex hormathodes Fernald. Wet margins of the fresh ponds, 

 common. J. Macoun; H. St. John, nos. 1,161, 1,162, and 1,163 (H). 

 Fr. August and September. 



