COMPOSITAE 635 



49. Synosma Raf. 



1. S. suaveolens (L.) Raf. In woods: Conn, and N. J. to 111. and 



Minn., south to Fla., W. Va. and Ky. 



Known in our area only from the coast of Conn, and Mercer and 

 Monmouth counties in N. J., the latter stations not recently col- 

 lected from. 



50. Senecio [Tourn.] L. 



Heads conspicuously radiate (except in forms of Nos. 2 and 5). 

 None of the leaves cordate. 



Leaves and stems persistently woolly. 1. 5. lomentosus. 



Leaves glabrous or nearly so; stems often woolly. 



Basal leaves obovate, spatulate, or oval; achenes gla- 

 brous. 

 Basal leaves obovate or suborbicular, crenate or 



dentate; involucral bracts 4-5 mm. long. 2. 5. obovatus. 



Basal leaves oval to ovate; involucral bracts 6-10 



mm. long. 3. 5. Crawfordii. 



Basal leaves oblong; achenes glabrous or hispidulous. 



Heads few; basal leaves mostly short. 4. 5. pauper cuius. 



Heads very numerous; basal leaves long. 5. 5. SmaUii. 



Basal leaves cordate or subcordate, orbicular. 6. 5. aureus. 



Heads discoid; rays none or minute. 7. 5. vulgaris. 



i. S. tomentosus Michx. In moist soil: southern N. J. to Fla., 

 west to La. 



Known, in our area, only from the pine-barrens of New Jersey 

 and along the coast from Ocean Co. southward. 



Tertiary, occasional : Cretaceous, o: Older Formations; o: 168-220 

 days. About sea level. 



2. S. obovatus Muhl. In moist soil and on banks: N. S. to Fla., 



west to Ont., Mich., Ky. and Mo. 



Conn. New Haven and Fairfield counties, increasing northward; 



unknown in the eastern part of the state. 

 N. Y. Throughout, increasing northward. 

 N. J. Recorded from Camden Co., occasional north of the 



coastal plain. 

 Pa. Northampton and Bucks counties. 



Tertiary, 0; Cretaceous, rare: Older Formations, increasing 

 northward. ii7-i89days. Sea level-3,980 ft. 



3. S. Crawfordii Britton. Wet meadows: Pa. and N. J. 



N. J. Mercer, Burlington and Camden counties, all near the 

 Delaware River. 



