2 54 



Notes on Lancashire Flowering Plants. 



One can hardly believe that suspension in pairs, and the 

 remarkable circumstances associated with it, are absolutely 

 peculiar to Limax maximns. It is certain that nothing" of the 

 kind occurs in our Limacids of other genera, Amalia, Agriolimax , 

 etc. ; but in Limax proper, particularly in those forms belonging 

 to the group of Limax maximns, one may reasonably expect 

 phenomena distinctly comparable with those now described. 

 There is a probability that Werlich's and Purkyne's slugs were 

 Limax cinereo-niger, a form belonging to the group just 

 mentioned, and often said to be a mere variety of Limax 

 maximns ; but according to Daniel this slug ' prefers terra firma 

 to mid-air,' from which one understands that it has been observed 

 to pair on the ground. 



Daniel is said to have seen the tree-slug {Limax arborum) 'in 

 couples during the pairing-season suspended by slimy threads 

 from the branches of a tree'; but, in the absence of confirmation, 

 one cannot feel sure that this is not a mistake, for Limax arborum 

 is subgenerically distinct from Limax maximus\ and its genitalia 

 differ, the penis being short, and furnished with a flagellum. 



NOTES on LANCASHIRE FLOWERING PLANTS. 



South Lancashire Rubi. -On the 6th of July I found Rubus pul~ 

 cherrimns Xeum. growing in hedges between Lydiate and Altcar. It has 

 not previously been noted for Vice-County 59, which is rather surprising, 

 seeing that it is so plentiful in parts of Vice-Counties 58 and 60. Other 

 Rubi seen in the same vicinity were R. Lindleianus Lees, R. gratus Focke, 

 R. calvatus Blox. , R. selmeri Lindeb., R. leucostachys Schleich., R. rosaceus 

 W.&X. (aggregate), R. corylifolius Sm., and R. dnmetorum var. ferox Weihe. 

 — J. A. Wheldon, Liverpool, 15th July 1901. 



Casual Plants at Aintree, near Liverpool. — The canal banks at 

 Aintree are famous for the production of interesting plants. Some of these 

 disappear after a single season, others reappear from year to year. I have 

 recorded a number of these in the various Reports of the Botanical Exchange 

 Club. On the 13th July a stroll along the canal bank enabled me to note 

 the following amongst other less interesting species : — 



Camelina sativa Crantz. Chenopodium opidifolium Schrd. 



Lepidium sativum L. Chenopodium ficifoliurn Sm. 



Thlaspi arveuse L. Abundant, extending- over 



Saponaria Vaccaria L. neighbouring fields in pro- 



Melilotus officinalis Lam. fusion. 



Melilotas indica All. Chenopodium iirbicum L. 



Epilobium angustifolium L. Chenopodium rubrum L. 



Malva borealis Wallm. Setaria viridis Beauv. 



Bupleurum rot inidi folium L. PJialaris paradoxa L. 



Carum Carni L. Phalaris minor. 



Coniuni maeulatum L. Apera spica-venti Beauv. 



Xanthinm spinosum L. Avena fatua L. 



Carduns setosus B. Poa palustris L. 



Marrubium vuigare L. Bromus arvcnsis L. 



Amaranthus retrofiexus L. Bromus uuioloides Kunth. 



— J. A. Wheldox, Liverpool, 15th July 1901. 



Naturalist^ 



