Botany. 



127 



which these plants are subject. The following is a list of 

 local species. Their occurrence in Down or Antrim is shown 

 by the letters I), or A., and their frequency in Ireland by a 

 number showing in how many of the 40 Irish botanical 

 divisions each has been found : 



Cystoi)teris fragilis D. A. 



Hymenophyllum 



tunbridgense ... A. 23. 

 H. unilaterale ... D. A. 26. 

 Pteris Aquilina ... D. A. 40. 

 Cryptogramme 



crispa D. A. 6. 



Blechnum Spicant D. A. 39. 

 Asplenium Adian- 



tum-nigrum ... D. A. 40. 

 A. marinum ... D. A. 20. 

 A. Trichomanes ... D. A. 40. 

 A. Ruta-muraria ... D. A. 40. 

 Athyrium Filix- 



f^mina D. A. 40. 



Ceterach ofificina- 



rum D. A. 40, 



Scolopendrium vul 



gare 



32- 



37- 

 40. 



Aspidium aculea- 



tum D. A. 



A. angulare D. A. 



Lastrea Thelyp- 



teris A. 14. 



L. Oreopteris ... D. A. 30. 

 L. Filix-mas ... D. A. 40. 



L. dilatata D. A. 40. 



L. ffimula D. A. 37. 



PolypodiumvulgareD. A. 40. 

 P. Dryopteris ... A. 5. 

 P. Phegopteris ... D. A. 20. 

 Osmundaregalis... D. A. 38. 

 Ophioglossum vul- 



gatum D. A. 35. 



Botrychium Lun- 



aria D. A. 35. 



D. A. 40. 



The Irish ferns not in Down or Antrim are — 

 Trichomanes radicans... 13. Asplenium viride ... 12. 

 Adiantum Capillus- Veneris 6. Aspidium Lonchitis ... 6. 

 Asplenium lanceolatum 3. Lastrea spinulosa ... 34. 



The variations of our local ferns have formed the life-long 

 study of W. H. Phillips. The species which varies most 

 in our district is Aspidiiwi angtilare. Next come Athyrium 

 Fitix-fcemina, Scolopendrium vulgare, Blech?ui??i Spicant, 

 Lastrea Filix-tnas, Polypodiuni vulgare, in the order named ; 

 and marked varieties have been also yielded by Hymeno- 

 phyllum unilaterale, Pteris Aquilina, Ceterach offici7iaru7n, 

 Asplenium Adiantum-fiigrum and A. Trichomanes, Lastrea 

 Oreopteris, Ophioglossum vulgatuin. 



The most marked of the local finds are — 



A. angulare. — Capitatum, I). A. ; cristatum, D. A. ; 

 cuneato-setosum, A. ; decomposittim, D. A. ; grandiceps, A. ; 



