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). 

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

 last. Autumn. 

 Philadelphia— Philadelphia, I. Burh (He.). Chester— Shrack's Hol- 

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

 New Castle — Townsend, Canby and Tatnall, 



46. TUSSILAGO L. 

 1- Tussilago Parfara L. Coltsfoot. M. p. 1021. Wet places along 

 brooks. Spring. 

 Philadelphia— Navy Yard; Mart. (B. C), League Island (Le.), Gifard 

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

 Dr. Geo. Smith (B. Sm.). Northampton— Bethlehem (Ca.) (Kr.). 

 Camden — Kaighn 's Point. 



47. PETASITES Gaertn. 

 L Petasites Petasites (L.) Kar'st. S,weet Coltsfoot,, M. p. 1022. Culti- 

 vated and waste ground. Spring. 

 Philadelphia — (P.). Bucks — Roek ' Hill (Cr.) (Fr.). Delaware — 

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



48. ARNICA L. 

 L Arnica acaulis (Walt.) B. S. P. Leopard' s-oane. 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.) Eaf., , 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 Purnace (Ca.) (U. C. 8.). 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, sitaveolens (L.) Raf. M. p. 1024. Rich woods. Autumn. 

 Lancaster— York Purnace. 

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



