358 GROSSULARIACEAE 



Sepals slightly united at the base, the hypanthium ob- 

 solete. 

 Ovary without hairs of any kind. 



Pedicels usually glandless, petals yellow. 3. R. vulgare. 



Pedicels usually bearing a few glands; petals red. 4. R. triste. 

 Ovary with gland-tipped hairs. 5. R. glandulosum. 



Hypanthium evident, though short. 6. R. americanum. 



i. R. lacustre (Pers.) Poir. In swamps and wet woods: Newf. 

 to Alask., Mass., Pa. and Mich., also in Colo., Utah and Cal. 

 Conn. Near Meriden and Salisbury. 

 N. Y. The summits of the Catskills. 

 Pa. Schuylkill Co. 



Tertiary, o: Cretaceous, 0: Older Formations, rare at higher 

 elevations. South of the moraine only in Pa. 1 17-138 days. 

 735-4,020 ft. 



2. R. nigrum L. Locally escaped from cultivation in the middle 



states. Native of Europe. 

 Rare as an escape in our area. 



3. R. vulgare Lam. Escaped from cultivation: Mass. to Ont. 



and Wise, south to Va. and Cal. 



Not uncommon as an escape in our area. 



4. R. triste Pall. (R. rubrum subglandulosum Maxim). In cold 



woods: Newf. to Alaska, south to N. J., Mich., S. Dak. and 

 Ore., also in northern Asia. 



Known only, in our area, from Onteora, Greene Co., and Bergen 

 Co., N. J. The reference to R. rubrum as native in Warren Co., 

 N. J., may apply to this species. 



5. R. glandulosum Grauer. (R. prostratum L'Her.). In cold wet 



places: Newf. to Mackenzie, Br. Col., Athabasca, Sask., 



Man., Wise, and N. Car. 



Conn. Northwestern part of Litchfield Co. 



N. Y. The Catskills. 



N. J. Reported but not recently collected from Bergen Co. 



otherwise unknown. 

 Pa. Monroe Co. 



Tertiary, 0: Cretaceous, o: Older Formations, increasing north- 

 ward. Not south of the moraine. 117-138 ft. 1,000-4,020 ft. 



6. R. americanum Mill. (R. florid um L'Her.). In woods: N. S. 



to Va., west to Alberta; also in New Mex. 



