Manchester Memoirs, Vol. li. (1907), No. 11. 7 



early destruction. The Americans call it the prairie, or 

 western, sunflower. 



Cyclachcena xanthifolia, Fresen., = Iva xanthifolia, 

 Nutt, occurred in a single example last season ; but it 

 was very diminutive, not being more than nine inches in 

 height when in fruit. It has previously been reported 

 from Par harbour, near St. Austell, in Cornwall. Like 

 many American plants it is wealthy in its local names, 

 viz. — false sunflower, giant ragweed, marsh elder, &c. 



Ambrosia artemisifolia, Linn. St. Anne's is remark- 

 able for the large number of species of Ambrosia, and its 

 allies which occur there ; there are, at least, four, all 

 American or Canadian. Of these the only one which can 

 be said to have become thoroughly established, is the 

 species to which attention was drawn in the paper in the 

 47th volume of the Society's Memoirs, viz., A. artemi- 

 sifolia, Linn. I have had this plant under observation 

 during the last five years, and am quite satisfied that it 

 has been a colonist on this part of the Lancashire coast 

 for many years. An eighteen years' resident has told me 

 recently that it was well established at St. Anne's when 

 he first came to the district, but that he could never 

 ascertain its name ; he remembers it in profusion on the 

 land which is covered by the houses and gardens of 

 St. Andrew's Road South. Unlike most of the other 

 aliens noted in this paper it monopolises the sandy surface 

 wherever it occurs, the underground stolons figured on 

 Plates I and II, which illustrated that paper, giving the 

 plant great staying and spreading power. The American 

 botanical publications almost uniformly describe the 

 plant as an annual, although the persistent underground 

 portions are well known for A. psilostachya, DC. (See 

 figure in Bulletin of the Experiment Station of the Kansas 



