yO ROSACES. 



Sphagnous swamps. Lubeck, Maine. White Mountains, N. H. Oakes. N. to 

 Arct. Amer., from Greenland to Behring's Straits. June, July. TJ.. Flower 

 large, white. Fruit red, well-flavored, composed of few and large carpels. 



Cloud Berry. 



** Leaves compound, 



3. R. trifiorus Richardson : unarmed ; stem suffrutescent at base, as- 

 cending ; leaves ternate or pedate-quinate, on slender petioles ; leafets niem- 

 branaceous, rhombic-ovate or ovate-lanceolate, acute at both ends, coarsely 

 serrate or incised, the terminal one petiolate ; peduncle terminal. 1 3-flow- 

 ered ; sepals lanceolate, reflexed, shorter than the spatulate-oblong petals. 

 R. saxatilis j3 Canadensis Mich. R. saxatilis Big. 



Moist woods and hills. Hudson's Bay to Penn. June. T^. Stem a foot or 

 more high, and with the branches often rooting at the extremity, minutely pu- 

 bescent. Flowers white. Fruit small, reddish-purple, usually sour. 



Jhoarf Raspberry. 



4. R. strigosus Mich.: stem erect, suffruticose, strongly hispid; leaves 

 ternate or quinate ; leafets oblong-ovate, acuminate, incisely serrate, white 

 tomentose beneath, the terminal one often subcordate ; peduncles 4 6- 

 flowered ; sepals spreading, nearly as long as the petals. JR. Pennsylvani- 

 cus Lam. 



Rocky places. Subarct. Amer. to Virg. W. to Oregon. May. ?2- Stem 

 reddish-brown, shining. Flowers white. Fruit red, richly flavored. This 

 species has probably been confounded with R. Idceus, which is not a native. 



Red Raspberry. 



5. JR. occidentalis Linn. : somewhat smooth, armed with strong hooked 

 prickles ; leaves ternate, rarely quinate ; leafets ovate, acuminate, coarsely 

 or incisely serrate, hoary tomentose beneath ; terminal peduncles several- 

 flowered ; petals obovate-wedgeform, shorter than the reflexed sepals. 



Woods. Can. to Geor. W. to Oregon. May July. 17 Stem 58 feet long, 

 sparingly branched. Flowers white, 1 3 on axillary peduncles, in terminal 

 leafy racemes. Fruit roundish, dark purple, almost black, sweet and well-fla- 

 vored. Black Raspberry. Thimble Berry. 



$ 2. Fruit persistent on the somewhat juicy receptacle. (Blackberry.) 



6. R. viUosus Ait. : prickly ; stem angular, and with the branches, pe- 

 duncles and lower surface of the leaves tomentose-villous and glandular ; 

 leaves ternate and pedate-quinate ; leafets ovate or oblong-ovate, mostly 

 acuminate, doubly or unequally serrate, the terminal one petiolate and 

 subcordate'; flowers in elongated terminal racemes ; sepals acuminate, 

 much shorter than the obovate spreading petals. 



var. frondosus Torr. : much less glandular, smoother ; flowers fewer, 

 corymbose, with leafy bracts. JR. frondosus Big. 



Fields and woods. Can. and throughout the U. S. May, June. Pj. Stem 

 erect, (4 -8 feet high.) or reclined. Flowers white, numerous. Fruit ovoid- 

 oblong, sometimes acute, half an inch to an inch in length, purple or nearly 

 black when ripe, sweet and well-flavored. High Blackberry. 



7. R. Canadensis Linn. : stem procumbent or trailing, somewhat prickly ; 

 leaves ternate or pedate-quinate, smooth or pubescent ; leafets oval, rhom- 

 bic-ovate or lanceolate, sharply and unequally serrate, often incised ; flow- 

 ers in racemes or somewhat corymbed, with leafy bracts ; sepals raucronate. 



