SUPPLEMENT TO BOTANICAL REPORT- 



47 



Pyrus aria. 



Saxifraga tridactylites. 

 Pastinaca sativa. 

 Galium Mollugo. 

 Carduus eriophorus. 

 C. acaulis. 

 Erigeron acris. 

 Chlora perfoliata. 

 Gentiana Amarella. 

 Thymus Serpyllum. 

 Origanum vulgare. 

 Salvia Verbenaca. 

 Fagus sylvatica. 

 Taxus baccata. 

 OrchidcEe, various species. 

 Sclerochloa rigida. 

 Bromus erectus. 



Scolopendrium vulgare. 

 Eucladium verticillatum. 

 Didymodon rubellus. 

 Encalypta vulgaris. 

 E. streptocarpa. 

 Ditrichum flexicaule. 

 Tortula tortuosa. 

 Neckera crispa. 

 Anomodon viticulosus. 

 Hypnum commutatum. 

 H. filicinum. 

 Madotheca platyphylla. 

 Collema various species. 

 Placodium candicans. 

 Solorina saccata. 

 Endocarpon miniatum. 

 Nostoc commune. 



On the other hand a calcareous soil is equally readily 

 recognised by the absence of other plants common and abundant 

 on other soils, especially sand, e.g., the foxglove, the heaths, the 

 bilberry, &c. 



Sometimes, as for instance in Teesdale and on Malham Moor, 

 the termination of the Hmestone rock may be mapped out on the 

 surface almost to a foot by the abrupt and total change which we 

 find in the flora when we cross its boundary. 



3. Arenaceous. — The contrast between the flora of sandy 

 and that of limestone soils is very strongly marked as a general 

 rule. Nevertheless there are certain plants usually found on 

 limestone which occur on sandy dunes on the coast, e.g., Chlora 

 perfoliata, Echium vulgare, Cynoglossmn officinale. Orchis pyra- 

 midalis, Ophrys apifera, &c. There are other plants which love 

 a dry soil, but are not particular whether it be limestone or sandy, 

 e.g., Trifolium sh'iatum and prociunbens, Verbascum Thapsus, &c. 

 The following may be taken as among the more characteristic 

 plants of arenaceous soils : — 



