264 . 87. FiLiCES. 



Native. Sylvestral, &c. Much less widely distributed 

 than A. lobatum, although it may be more frequent than 

 the latter in the southern provinces. I have seen speci- 

 mens which I refer to A. angulare from York and West- 

 moreland, and various other counties to the southward, 

 but none from Scotland. The Aspidium " aculeatum " of 

 the printed labels of the Botanical Society of Edinburgh 

 (1839 — Kent — Stevens) is A. angulare, not A. lobatum. 

 But I possess an example of A. lobatum from the same 

 Society, under the manuscript name of A. " aculeatum " 

 (no date — Collinton woods, Edinburgh). It ■\\'ill be seen 

 from the mention of these examples, that A. aculeatum is 

 actually represented in herbaria by either of the others, 

 as intimated under head of the latter species or name. 



1385. Lasteea Thelypteeis, Presl. 



Ai-ea 123456789 10 11 12** 15 *i,. [18]. 



S. Umit in Somerset, Isle of Wight, Kent. [Devon ?] 



North limit in Forfar. [Shetland ?] 



Estimate of provinces 13. Estimate of counties 30. 



Latitude 50 — 57. English type of distribution. 



Agrarian region. Inferagrarian — Midagrarian zones. 



Descends to the coast level, in the Peninsula ? 



Ascends to 200 yards, in Humber. 



Eange of mean annual temperature 51 — 46. 



Native. Uliginal. Sparingly scattered through Eng- 

 land, and known certainly in but one county of Scotland. 

 It is to be feared that in several of the recorded stations 

 the Lastrea Oreopteris has been mistaken for the present 

 much rarer species, and that in other localities this fern 

 has since been destroyed by drainage. Specimens are in 

 my herbarium from Somerset, Surrey, Suffolk, Norfolk, 



