78 Annals of the Carnegik Museum. 



* A. incarnata Linnaeus. Swamp milkweed. 



A white-flowering form, Moon Township, near CoraopoHs, 

 August, 1890. 



* A. Syriaca Linnsus. Common milkweed. 

 A. Cornuti Decaisne. 



* A. exaltata (Linnaeus). Poke milkweed. 

 A. pliytolaccoides Pursh. 



t A. variegata Linnaeus. White milkweed. 



* A. quadrifolia Jacquin. Four-leaved milkweed. 



ACERATES Elliott. 



* A. viridiflora (Rafinesque). Green milkweed. 



Moon Township, Shafer farm, Ji^dy, 1887. Harrison Township, 

 John Pott's farm, July, 1895. 



GENTIANACEiE Dumortier. 

 GENTIAN FAMILY. V-15. 



S ABB ATI A Adanson. 



* S. angularis (Linnasus). Rose-pink. 



GENTIANA Linn;^us. 



* G. crinita Froelich. Fringed gentian. 



Shaler Township, Miller farm, July, 1886. Hon. J. D. Shafer. 



* G. Andrewsii Grisebach. Closed gentian. 



OBOLARIA Linuc^us. 



* 0. Virginica Linnaeus. Pennywort. 



"Woods below Sewickley, 1868," Rev. S. W. Knipe. Moon 

 Township, McKee tract. May 8, 1887. 



