4. CRUCIFER^.. 137 



Native. Sjlvestral. Found in the counties of Sussex, 

 Kent (if any of the Tunbridge Wells' localities are within 

 the same county) Bucks, Herts, Middlesex and Ayr. Those 

 of SuiTey, Edinbiu-gh and Perth have also been recorded for 

 this local plant, but requii-e additional confinnation. The 

 altitudes wUl probably be between 50 and 150 yards ; on 

 these I can say nothing positive. Were it not for the oc- 

 currence of the Dentaria in Ap'shire, the Germanic ty])e 

 might have been indicated with appai'ent propriety ; so 

 that by a peculiar anomaly, the more extended area (or, 

 rather, a second and separated area) throws the plant into 

 the local tj^je. It would seem to be a particulai-ly local 

 example of the English or British type. 



84. Cardamine amara, Liuit. 



r. /'/// Area i 2 3 4 5 * 7 8 9 10 11 12 13 14 15./^. 



*c£ South limit in Dorset, Sussex, Kent. C^^^unr^ 



North limit in Moray and Lanarkshii'e. "^ ^t*- At ^ 



Estimate of provinces 14. Estimate of counties 50. 



Latitude 50 — 58. British type of distiibution. 



Agraiian region. Inferagi-arian — Superagraiian zones. 



Descends nearly to the coast level, in the Peninsula. 



Ascends to 100 or 200 yards, in England. 



Range of mean amiual temperature 50 — 46. 



Native. Paludal and Sylvestral. Though widely distri- 

 buted, and reported from forty counties, this can scarcely 

 be designated a common or frequent plant. I am induced 

 to add one to the thirteen pro\Tnces numbered above, in 

 the estimate, on the probability of the species occmring in 

 South Wales or the West Highlands, the plants of whicli 

 are as yet very incompletely ascertained. It may eventu- 

 ally turn out that 60 would have been a better county esti- 



T 



