1 904. Prakgkr. — The Flo7 a of A cli ill Island. 2 87 



Anai^ytical and Statistic a I, Notes. 



From the above list it will be seen, I may remark in 

 passing, that Achill scarcely deserves its former reputation for 

 possessing " hardly a rare plant." The dozen rarest Irish 

 species which grow on the island, and the number of 

 botanical divisions from which they are on record, including 

 their Achill stations, appears as follows : — 



Ranunculus scoticus, 2. Adiantum Capillus- Veneris, 7. 



Cochlearia grsenlandica 2. Arctostaphylos Uva-ursi, 8. 



Erica n;editerranea, 2. Oxyria digyna. 8. 



Rubus carieusis, 3. Epilobium angustifolium, to. 



R. duueusis, 3. Potamogeton filiformis, 10. 



Eriocaulon septangulare, 7. Saxifraga umbrosa, 11. 



This list will bear comparison with many equal areas on 

 the west coast. 



The additions (according to the I.T.B. standard) to the now 

 well-worked flora of West Mayo resulting from my survey 

 are as follows : — 



Eumaria capreolata. Rubus rosaceus (hystrix:). 



fUlex Gallii. 8 Epilobium angustifolium. 

 8 Rubus cariensis. Eryngiura maritimum. 



rhamnifoUus. *Tanacetum vulgare. 



8 mucronatus. Potamogeton pectinatus. 



8 dunensis. 8 jGlyceria aquatica. 



Of these, the five species marked " 8 " are new to District 

 VIII. of ' Cybele Hibernica.' 



Types of DhtrihUio^u — The most pronounced feature of the 

 Achill flora is not so much the predominance in it of any 

 "type of distribution," British or Irish, as its strongly calci- 

 fuge character Taking the ''Cybele Hibernica" lists, we 

 find that out of 53 species marked as calcicole, the "calcicole 

 A" group is unrepresented. Of " calcicole B" plants, four 

 — Anthyllis Viibieraria, Tussilago Farfara, Ca7rx glauca, and 

 Adiaiitum Capillus- Veneris — are pre-:ent; of ''calcicole C" 

 only one, namely, Antennaria dioica ; in all, 5 out of 53. 

 Whereas, of 46 Irish species marked "calcifuge A," Achill 

 has no less than 39, or 85 per cent. 



