64 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 



Glyceria Fernaldii (Hitchc.) St. John. (G. pallida, var. Fernaldii 

 Hitchc.) In marshy spots, East End, J. Macoun (C. no. 22,684). 

 Fr. Early August. 



Festuca rubra L. Common on the drier parts of the island. 

 Collected by J. Macoun (C. no. 22,686); H. T. Gilssow; H. St. John, 

 no. 1,144 (H). 



FL July. Fr. August. 



F. rubra L., var. glaucescens (Hegetschw. & Heer) Richter. 

 Common on the nearly bare dunes where the coarse glaucous leaves 

 form great tufts. H. St. John, nos. 1,145, 1,146, and 1,147 (H). 



Fr. August. 



BROMUS SECALINUS L. A fugitive weed. In meadow grass, rare. 

 J. Macoun (C. no. 22,671). 

 Fr. July. 



AGROPYRON REPENS L. Established near the Life Saving Stations. 

 Recorded by J. Macoun; H. St. John, no. 1,148 (H). 

 Fr. August. 



A. repens L., var. pilosum Scribn. On sand dunes remote from 

 the Life Saving Stations and apparently native. H. St. John, no. 

 1,149 (H). 



FL August. 



HORDEUM JUBATUM L. A weed at the Main Life Saving Station. 

 Reported by J. Macoun; H. St. John, no. 1,150 (H). 

 Fr. August and September. 



Elymus arenarius L., var. villosus E. Mey. (E. arenarius of 

 Am. authors; E. mollis Trin.) Very rare on the island, occurring, 

 as far as known, only along the top of a narrow ridge of dunes extend- 

 ing a short distance from the eastern end of Wallace Lake along the 

 South Beach. This line of dunes has been rapidly washing away and 

 the remnants are still exposed to the action of the storms. This 

 grass luxuriates here, sending its culms up to a height of six feet or 

 more, but the station is in great danger of being destroyed. H. St. 

 John, no. 1,151 (H). 



Fr. September. 



CYPERACEAE. 



Eleocharis palustris (L.) R. & S. Abundantly fringing the 

 borders of the permanent and semi-permanent fresh-water ponds. 



