OF ARTS AND SCIENCES. 847 



Hab. Borders of swamps and along streams ; from Nova Scotia to Ontario and 

 Minnesota, and soutiiward to Florida and Mississippi. — W. Vermont [Prinfjh) ; 

 Massacliusetts (Oakes, Jesup, Robinson, Sargent, Watson) ; Rhode Island {Engel- 

 viann, Sargent) ; Connecticut (Wriijld, Jesup) ; New York (Graij, Brown); New 

 Jersey (Torreij, Redjield) ; Pennsylvania (Pickering, RedJielJ, Green, Engelmann); 

 Ohio (Riddtll, Lapham) ; Indiana ( Clapp, Short) ; Illinois, on Illinois River ( Ge>/er, 

 Engelmann); Wisconsin, at La Pointe (Engelmann); W. Missouri (Broadhead) ; 

 Kentucky (Riddell, Short, Drummond) ; Tennessee, at Nashville ( Gattinger) : IMary- 

 land (J. D. Smith); Virginia (Rugel, Cartiss, Shiiver); District of Columbia 

 (Vasey); N. Carolina (Engelmann, J. D. Smith) ; S. Carolina (Mellicheimp, Bacli- 

 man); Georgia (Say, Wright); Florida (Leavenworth, Curtiss); Mississippi (Ilil- 

 gard). I have seen no specimens from Canada, but Macoun reports it as ranging 

 from Nova Scotia and New Brunswick to the western part of Ontario ; speci- 

 mens from New Brunswick, sent as sucii, prove to be A*, lucida. Upliam also 

 reports it from several localities in Minnesota, but as infrequent. 



A species readily recognized by the fine serration of the leaflets, in connection 

 with narrow stipules and usually hooked spines. Sometimes, liowever, some 

 leaves may be found as coarsely toothed as in R. lucida, and as the two species 

 are often found in New England growing together, hybrids may be expected to 

 occur. The time of flowering is about two weeks later than in R. lucida. The 

 hispidness of pedicel and fruit is sometimes deciduous, leaving them nearly 

 smooth. 



1- ■*- Leaflets coarsely toothed. 



12. R. LUCIDA, Elirh. Stems often tall (a few inches to 6 feet 

 high), with at length stout straight or usually hooked spines: stipules 

 usually naked, more or less dilated ; leaflets dark green, rather thick, 

 smooth and shining above, often slightly pubescent beneath and oa 

 the rhachis : flovpers, fruit (4 to 6 lines broad), etc., nearly as in 

 H. Carolina; outer se[)als fre(][uently with one or two small lobes. — 

 Beitr. 4. 22. -R. laxa, Lindl. Ros. Monogr. 18, t. 3. R. Lindlcyl, 

 Spreng. Syst. 2. 547. 



Hab. Margins of swamps or moist places; from Newfoundland to Eastern 

 New York and Pennsylvania. — Newfoundland (Oshoru) ; Cape Breton (Macoun) ; 

 Nova Scotia (Macoun, Burgess) ; New Brunswick (Fowler, Vroom) ; Maine, at 

 Kennebunkport (Jesup) ; Vermont (Pringle) ; Massaclmsetts (Oakes, Torrey, Rob- 

 inson, Sprague, Sargent, Engelmann, Watson), at Iladley (Jesup) ; Rhode Island 

 (Engelmann); Eastern New York (Nuttalt), at College Point, L. I. (Schrenk) ; 

 Pennsylvania (Read, Townsend). 



This as it shows itself in New England and eastward appears to be quite dis- 

 tinct both from the last and from the following species; still forms occur 

 (especially in the herbarium) that are sufficiently troublesome to distinguish. 

 The New York and Pennsylvania specimens, though very old and poor, belong 

 here rather tlian elsewhere, as also some imperfect specimens from a swamp 

 near Wytheville, Virginia (Shriver). Dr. Torrey, in his Flora of the AWthern 

 and Middle Stales gives as localities for this species only "mountain bogs, 

 Fishkill Mountains, etc.. New York; Williamstown, Ma§s.," but the single 

 specimen from New York in his herbarium is too poor to show tlie distinguish- 



