FLORA OF THE EAST RIDING OF YORKSHIRE. 1 29 



833. Petasltes fragrans. Presl. 



Alien. 



Near Hessle chalk pits (C.W.), an escape from gardens. 



834. P. officinalis. Mwnch., 105. 



(Butter-bur. " Wild Rhubarb ")• 

 Native, Brit., 1-7. April, II. 



In damp, rich soil, common. 



835. P. albus. Gcertn. 



(White Butter-bur). 



Alien. Jan., IV. 



Introduced and escaped from gardens at Cottingham near 



Snuff Mill Pond, where it flowers in January and February 



every year. Seen repeatedly since 1886.* 



836. Doronicum Pardalianches. 



(Leopard's-bane). 

 Alien. 



AtMetham*; Londesboro' (B.). Welton Woods (C.W.). 

 Rose Cottage, Hull (G.N., 1864). 



838. Senecio vulgaris. Ltmi., 112. 



(Common Groundsel). 



Native, Brit., 1-7. Jan. to Dec. 



Everywhere in gardens. 



839. S. sylvaticus. Lmn., 107. 



Native, Brit, 1-7. Aug., I. 



"On Tilmire " (B.) ; Houghton Woods; Skipsea, 

 B rough.* 



840. S. ViSCOSUS. Li?m., 33. 

 Native, Eng., 2, 3, 4, 6. August. 



Side of railway. Market Weighton (J.J.M.). Common 

 amongst the dock- waste plants.* 



