342 FLORA OF PHILADELPHIA. 



6. Artemisia vulgaris L. Common Mugwort. M. p. 1019. Waste places. 



Summer and fall. 



7. Artemisia Pontica L. Roman Wormwood. M. p. 1020. Waste places. 



Summer. 

 Hunterdon — Tumble Station (C). 



8. Artemisia gnaphalodes Nutt. Western Mugwort. M. p. 1020. Bal- 



last. Autumn. 

 PMtoofe?p7tm— Philadelphia, 7. Burk (He.). C/iesier— Shrack's Hol- 

 low, South Valley Hill, Joseph Crosson (Windle.). 

 Neiv Castle— Towasend, Canby and Tatnall. 



46. TUSSILAGO L. 

 1. TussiLAGO Farfara L. Coltsfoot. M. p. 1021. Wet places along 

 brooks. Spring. 

 Philadelphia— l^&Y J Yard, Mart. (B. C), League Island (Le.), Girard 

 Point, Greenwich Point (Te.). Delaware— Ds.rhj near the Bell Tavern, 

 Dr. Geo. Smith (B. Sm.). iVort/jamp^oji— Bethlehem (Ca.) (Kr.). 

 Camdeji—Kaighn's Point. 



47. PETASITES Gaertn. 

 L Petasites Petasites (L.) Karst. Sweei Coltsfoot. M. p. 1022. Culti- 

 vated and waste ground. Spring. 

 Philadelphia — (P.). Bucks — Rock Hill (Or.) (Fr.). Delaware — 

 Upper Darby (B. Sm.). Northampton— Bangor (P.). 



48. AENICA L. 

 1. Arnica acaulis (Walt.) B. S. P. Leopard' s-hane. M. p. 1022. Low 

 woods. Spring. 

 Chester — Oxford (Cr.). Lancaster — Pleasant Grove (Ca.), Little 

 Britain Twp. (Pr.), New Texas (P.). 



49. ERECHTITES Raf. 

 1. Erechtites hieracifolia (L.) Raf. Fire-weed. M. p. 1023. Woods, 

 thickets and waste places. Summer. 



50. MESADENIA Raf. Indian Plantain. 



Leaves green, both sides, angulate-dentate. 1. M. reniformis. 



Leaves glaucous beneath, green above, angulate-lobed. 2. M. atriplicifolia. 



1. Mesadenia reniformis (Muhl.) Raf. M. p. 1024. Rich, damp woods. 



Summer. 

 Lancaster — York Furnace (Ca.) (U. C. S.). Northampton — (P.). 

 Camden — Banks of the Delaware (C). 



2. Mesadenia atriplicifolia (L.) Raf. M. p. 1024. Rich woodlands. 



Summer. 



51. SYNOSMA Raf. Indian Plantain. 

 1. Synosma suaveolens (L.) Raf. M. p. 1024. Rich woods. Autumn. 

 Lancaster — York Furnace. 

 Monmouth— Freehold (C). Mercer— Princeton (C). 



