338 COMPOSITAE 



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

 and Pa. — Pennsylvania : Erie, Presque Isle ; Blair, Hollidaj'sburg ; 

 Philadelphia. 



7. Artemisia vulgaris L. Common Mug wort. (Man. p. 1019 ; I. F. 

 f. 4010.) lu waste places, N. S. to Ont., Mich., N. C. and Pa. Nat. 

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

 Tannersville ; Northampton, Bethlehem ; Philadelphia ; Alle- 

 gheny, 



8. Artemisia Pontica L. Roman Wormwood. (Man. p. 1020 ; I. F. 

 f. 401 1. ) 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. 40/9.) 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. f. 402J.) lu cultivated and waste grounds, eastern 

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

 ampton, Bangor ; Bucks, near Ouakertown ; Philadelphia ; Dela- 

 ware. 



46. ARNICA L. 



1. Arnica acaulls (Walt. ) B.S. P. Leopard's-b.\ne. (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. y. 402S. ) lu woodlands, thickets and waste places, verj' 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. i. M. reniforntis. 



Leaf -blades angulate-lobed : stem terete, glaucous. 2. ^[. atriplicifolia. 



1. Mesadenia renlformis (Muhl.) Raf. GREAT Indian Plaintain, 

 (Man. p. 1024 ; I. F./. 4029.) In woods, N. J. and Pa. to Minn., south 

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

 ter ; Perry ; Allegheny. 



2. Mesadenia atriplicifolia (L-) Raf. PalE Indian Plaintain. 

 (Man. p. 1040 ; I. F. f. 4030.) In woods, western Ont. to Minn., south 



