ST. JOHN: SABLE ISLAND. 79 



lets obovate, pilose on the veins, coarsely and doubly serrate, 2.5-8 

 cm. long, 1.5-7 cm. wide: the inflorescence an interrupted leafy sub- 

 cylindric simple or compound raceme, 0.6-3.2 dm. long; pedicels 

 1.5-4 cm. long, very densely pilose, armed with prickles and at times 

 with a few stipitate glands; sepals lance-ovate; petals white, spatu- 

 late, 7-11 mm. long; fruit globose. 



PRINCE EDWARD ISLAND: dry open soil, Dundee, Aug. 26, 1912, 

 M. L. Fernald, Bayard Long, and Harold St. John, no. 7,652 (TYPE 

 in Gray Herb.); railroad banks, Mt. Stewart, July 30, 1912, M. L. 

 Fernald, E. B. Bartram, Bayard Long, and Harold St. John, nos. 

 7,655 and 7,654 (H); Miscouche, Sept. 12, 1909, W. H. Blanchard, 

 no. 806 (H). NOVA SCOTIA: Pictou, July 22, 1907, C. B. Robinson, 

 no. 574 (H). SABLE ISLAND: July 24, 1899, J. Macoun (C. no. 21,193 

 in part); sprawling among Ammophila on sand dunes, Aug. 26, 1913, 

 H. St. John, no. 1,259 (H). MASSACHUSETTS: damp dune hollows 

 east of Race Point Life Saving Station, Provincetown, August 2, 1919, 

 Fernald & Long, no. 18,585. 



Rydberg cites with some doubt the Macoun nos. 21,183 and 

 21,193 from Sable Island as Rubus nigricans X recurvans, Bull. Torr. 

 Bot. Cl. xlii. 476 (1915); and on the following page he cites no. 

 21,193 as Rubus nigricans X procumbens. On p. 478 he cites the C. 

 B. Robinson no. 574 as Rubus hispidus X nigricans. 



An anonymous writer reports " blackberries " on Sable Island 

 (All the Year Round, Ix. 521, 1890). 



This species of the Maritime Provinces and Cape Cod differs from 

 RMardaius Blanchard by having broadly obovate more coriaceous 

 leaflets, abundant strong prickles, densely villous and ordinarily 

 glandless but bristly pedicels; instead of the broadly lanceolate 

 leaflets tapering to each end, the less numerous weaker prickles, 

 and the less pubescent and copiously glandular pedicels of that 

 species; from R. setosus Bigel. by having strong prickles thickened 

 at the base and broad obovate bluntly serrate dark green coriaceous 

 leaflets, instead of fine setae and narrower oblanceolate sharply 

 serrate paler leaflets, long-trailing tips of the branches and essen- 

 tially glandless pedicels; from R. hispidus L. by its much coarser 

 habit, strong prickles, larger leaves, and its more elongate coarser 

 inflorescence with larger corolla and larger seeds (averaging 3 mm. 

 in length), the comparatively delicate R. hispidus having fine weak 

 prickles and more rounded smaller leaflets and small fruits with seeds 

 averaging 2 mm. in length. 



FL, Fr. August. 



Rosa virginiana Mill. Very common on the more stable sand 

 dunes throughout the island. "The wild rose" is mentioned by 

 J. B. Gilpin (G. p. 18). J. C. Tache says, "La plus belle plante 

 d'ornement est le rosier sauvage, qui vient a merveille, sur cette 



