715 



that this excursion must have been a very rapid one, affording little 

 time to dwell anywhere. Much more would no doubt have been ob- 

 served by practised eyes, with more leisure to investigate. The com- 

 moner ferns have not been mentioned in course, in order not to en- 

 cumber this paper. The following is a complete list of all we noticed, 

 in the order of their abundance, as agreed upon by our party of three, 

 and as we happened to observe them throughout the whole journey. 



1. Athyrium Filix-fcemina 



2. Lastrea Oreopteris 



3. Pteris aquilina 



4. Lastrea Filix-mas 



5. „ multiflora 



6. Polypodium Phegopteris 



7. Lomaria Spicant 



8. Asplenium Adiantum-nigrum 



9. Polypodium vulgare 



10. Scolopendrium vulgare 



11. Allosorus crispus 



12. Asplenium Trichomanes 



13. „ Ruta-muraria 



October 12, 1849. 



14. Cystopteris dentata 



15. Asplenium virid'e 



16. Polypodium Dryopteris 



17. Polystichum angulave 



18. Asplenium lanceolatum 



19. Hymenophyllum Wilsoni 



20. Asplenium septentrionale 



21. Polystichum aculeatum 



22. Osmunda regalis 



23. Lastrea spinosa 



24. Ceterach officinarum 



25. Polystichum Lonchitis 



W. Bennett. 



Occurrence of Poterium muricatum in Warwickshire. 

 By Thomas Kirk, Esq. 



This recent addition to the British Flora occurs in various places 

 on the slopes of the Coventry and Leamington railway. It is abun- 

 dant near the Leamington station, and is more or less plentifully dis- 

 tributed at short intervals, till within two miles of Coventry ; when it 

 becomes a scarce plant. It also occurs in a field adjoining the 

 Kenilworth station. 



The stems appear to me rather more angular than those of P. San- 

 guisorba, from which, notwithstanding its close resemblance, it is rea- 

 dily distinguished by the alate angles and deeply pitted sides of the 

 fruit. I believe it is considered identical with the Hungarian P. po- 

 lygonum of Waldstein and Kitaibel, but at present some doubt exists 

 on that point. 



Its discovery in counties so widely distant as Essex and Warwick, 

 is an argument in favour of the probability of its frequent occurrence ; 



