226 New or rare Plants of the State of Neiv York. 



VALERIANE^. 



12. Valeriana sylvatica, Rich, in Frankl. Jour. apj). 

 p. 42. Hook. FL Bor. Am. I. p. 291. Beck, Bot. N. and 

 Middle States, p. 164. 



Very abundant in a sphagnous swamp in Wayne county, 

 near the shore of Lake Ontario ; where it was discovered, in 

 the summer of 1833, by Dr. Sartwell. My specimens agree 

 in every respect with those from Prof. Hooker, in Prof. Tor- 

 rey's herbarium. 



COMPOSITiE. 



13. DiPLOPAPPUs ALBUS, Hook. Fl. BoT. Am. II. p. 21. 

 Aster albus, {Willd. Herb.) Spreng. Syst. Veg. III. p. 528.'' 

 Chrysopsis alba, Ntctt. Gen. II. p. 152, {v. sp.in Herb. Nutt.) 

 DoelUngeria? ptarmicoides, Nees ah Esenbeck, Ast. p. 183. 



On the rocky banks of Black River, near Watertown, Jeffer- 

 son county ; where it is very abundant, and was first noticed by 

 Dr. Crawe. Flowers early in August. 



Obs. This interesting species was discovered by Nuttall 

 around Fort Mandan, on the Missouri : it has also been found 

 on the shore of Lake Superior, by Dr. Pitcher, and on the 

 banks of the Saskatchawan, by Dr. Richardson ; so that its 

 geographical range is very extensive. I have not been able 

 to find any trace of an outer pappus in the numerous specimens 

 which I have examined. They agree in all respects with a 

 specimen from Prof. Hooker, (in Herb. Torrey,) except that 

 in our plant the hairs of the inner pappus are subclavate at the 

 extremity. Our plant appears to me to differ from Doellingeria 

 of Nees ab Esenbeck only in wanting the outer pappus. I have 

 no means of determining whether this species is identical with 

 Aster albus of Willdenow's herbarium ; but as there is a species 

 under this name in the catalogue of Muhlenberg, from whom 

 Willdenow received many North American Asters, it is highly 

 probable that this synonym is correctly referred. 



