ST. JOHN: SABLE ISLAND. 75 



R. reptans L. (R. Flammula, var. reptans (L.) Meyer.) Very 

 common in the wet dune hollows. J. Macoun; H. T. Gussow; H. 

 St. John, no. 1,235 (H). 



FL, Fr. August. 



R. REPENS L. A rare introduction. Found only by J. Macoun 

 (C. no. 21,132). 

 Fr. August. 



R. ACRIS L. A weed at the Main Life Saving Station. J. Macoun; 

 H. St. John, no. 1,236 and 1,237 (H). 



FL August and September. Fr. September. 



[THALICTRUM DIOICUM L. Listed by J. Macoun, and H. T. Gussow, 

 but the specimens are T. polygamum, var. hebecarpum.] 



Thalictrum polygamum Muhl., var. hebecarpum Fernald. 

 Common on the stable, well vegetated dunes. J. Dwight, Jr. (D. 

 p. 13) mentions as one of the weeds " Thalictrum sp.?" As there is 

 but one species of Meadow Rue growing on the island, and that very 

 commonly, we can feel reasonably sure that J. Dwight, Jr., found T. 

 polygamum, var. hebecarpum. It is hard to understand, however, 

 why he called it a weed. J. Macoun (C. no. 21,134); H.T. Gussow 

 (E); H. St. John, no. 1,238 (H). 



Fl. July and August. Fr. August and September. 



[T. ZIBELLINUM Greene. In the Ottawa Naturalist, xxiv. 30 

 (1910) this new species was published, based upon the collection of 

 J. Macoun (C. no. 21,134). I have examined the suite of specimens 

 collected under this number and feel no hesitation about stating that 

 the plant should be treated as T. polygamum, var. hebecarpum.] 



Coptis trifolia (L.) Salisb. On the more permanent, grass- 

 covered dunes. J. Macoun; H. St. John, no. 1,239 (H); H. S. Glaze- 

 brook (H). 



FL June. 



CRUCIFERAE. 



CAPSELLA BURSA-PASTORIS (L.) Medic. A weed at the Main Life 

 Saving Station. J. Macoun; (also as "shepherd's purse" M. p. 

 218 A); H. St. John, no. 1,240 (H). 



FL, Fr. August. 



