338 COMPOSITAE 



S., now distributed as a weed from Man. to N. S., south to Kans., Ky. 

 and Pa. — Pennsylvania : Erie, Presque Isle ; Bi<air, Hollidaysburg ; 

 Phi3:,adei,phia. 



7. Artemisia vulgaris I/. Common MugworT. (Man. p. 1019 ; I. F. 

 /. 4010.) In waste places, N. S. to Ont., Mich., N. C. and Pa. Nat. 

 from Eu. Native also ' of Asia. — Pennsylvania : Wayne ; Monroe, 

 Tannersville ; Northampton, Bethlehem ; Phii<adei,phia ; Ai<le- 



GHENY. 



8. Artemisia Pontica I,. Roman Wormwood. (Man. p. 1020 ; I. P. 

 /. ^11.) On hillsides, Pa. and N. J. Fugitive or adv. from Eu. — Penn- 

 sylvania : Luzerne, Lily Lake. 



44. TUSSILAGO L. 



1. Tussilago Farfara L. COLTSFOOT. CouGhworT. (Man. p. 1021 ; 

 I. F.y. 40/p.) In moist soil, along roadsides, etc., N. S. and N. B. to 

 Mass., N. Y. and Minn. Nat. from Eu. — Pennsylvania : Monroe, Tan- 

 nersville ; Northampton, Bethlehem ; Susquehanna ; Philadelphia ; 

 Erie. 



45. PETASITES Gaertn. 



1. Petasites Petasites (L.) Karst. BuTTer-bur. Butterfly Dock. 

 (Man. p. 1022 ; I. F. /. 402^.) In cultivated and waste grounds, eastern 

 Pa. Nat. from Eu. Native of northern Asia. — Pennsylvania: North- 

 ampton, Bangor ; 5uCKS, near Quakertown ; Philadelphia ; Dela- 

 ware. 



46. ARNICA L. 



1. Arnica acaulis (Walt.) B.S. P. Leopard's-bane. (Man. p. 1022 ; 

 I. F.y. 4024.') In low woods, Del. and southeastern Pa. to Fla. — Penn- 

 sylvania : Chester ; Lancaster, New Texas. 



47. ERECHTITES Raf. 



1. Erechtites hieracifolia (L. ) Raf. Fire-weed. (Man. p. 1023 ; I. 

 F. f. 4028. ) In woodlands, thickets and waste places, very abundant 

 after fires, Newf. to Fla., west to the N. W. Terr., Neb. and La. Also 

 in Mex. and S. America. — Pennsylvania : Lackawanna ; Monroe ; 

 Northampton ; Bucks ; Delaware ; Chester ; Lancaster ; Frank- 

 lin ; Huntingdon ; Erie ; Allegheny. 



48. MESADENIA Raf. 



Leaf -blades repand-dentate : stem grooved, green. 1. M. reniformis. 



Leaf-blades angulate-lobed : stem terete, glaucous. 2. M. atripHcifolia. 



1. Mesadenia reniformis (Muhl.) Raf. GREAT Indian Plaintain. 

 (Man. p. 1024 ; I. F./. 402^.') In woods, N. J. and Pa. to Minn., south 

 to N. C. and Tenn. — Pennsylvania : Northampton ; York ; Lancas- 

 ter; Perry; Allegheny. 



2. Mesadenia atripHcifolia (L.) Raf. PalE Indian Plaintain. 

 (Man. p. 1040 ; I. F. / 40JO.) In woods, western Ont. to Minn., south 



