368 ROSACEAE 



17. Agrimonia [Tourn.] L.* 



Fruiting hypanthium with several series of bristles, the lower bristles 



reflexed. 1 . A . gryposepala. 



Fruiting hypanthium with 2-4 series of bristles, the latter erect, 

 ascending or merely spreading. 

 Racemes and leaves glabrous or nearly so. . 2. A. rostellata. 



Racemes and lower surface of the leaves decidedly hairy. 

 Roots tuberous and thickened. 



Leaflets 5-7, rarely 9, obovate or oval or rarely 



elliptic. 3. A. pubescens. 



Leaflets 7-13, lanceolate or narrowly elliptic. 4. A. Bicknellii. 



Roots not tuberous. 



Leaflets 5-9, broadly lanceolate, oblanceolate or 



elliptic, with rather few teeth. 5. A. striata. 



Leaflets 9-25, narrowly lanceolate, with numerous 



teeth. 6. A. parviflora. 



i. A. gryposepala Wallr. {A. hirsuta (Muhl.) Bicknell). Bor- 

 ders of woods and thickets: N. S. to N. Car., Neb. and N. D. 

 and in Cal., N. Mex. and Mex. 



Common throughout the range except in the pine-barrens and the 

 region immediately surrounding them, there wanting; always in- 

 creasing northward. 



2. A. rostellata Wallr. {A. striata of Britton's Manual. Not 



of Michx.). Hilly woodsides: Conn, to Ga., Ala. and Kan. 



Conn. Not very common along the coast, decreasing inland, and 

 wanting northward. 



N. Y. On L. I., frequent north of the moraine; Bronx and West- 

 chester counties. 



N. J. Throughout the region north of the coastal plain, south- 

 ward to Gloucester and Camden counties. 



Pa. Bucks Co. 



3. A. pubescens Wallr. {A. mollis (T. & G.) Britton). In dry, 



open woods: N. Y. and Ont. to Ga., Ark., Kan. and Minn. 

 Scattered over most of our area, except the pine-barrens, there 

 rare or wanting; rare in the region surrounding the pine-barrens. 



4. A. Bicknellii (Kearney) Rydb. In woods: S. Mass. to Pa., 



Ga. and Tenn. 



N. Y. Common on L. I., not reported from S. I.; in N. Y., Bronx, 

 Westchester, and Putnam counties, otherwise unknown. 



* The taxonomic treatment here presented is adapted from Dr. P. A. Rydberg's 

 monograph in North American Flora. I have also followed Dr. Rydberg's treatment of 

 Ceum, Rubus and Rosa in the same work, and here gratefully express my indebtedness 

 to him for much help in these difficult genera. 



