A SURVEY OF THE LOWER TEES MARSHES 



103 



Immediately to the north of this, is the habitat of Gyinna- 

 denia densiflora; on its southern margin, likewise, a rare 

 spider, Pirata latitans, was first captured and added to the 

 Durham list. 



West of the lode, vegetation of mucli the same facies 

 occurs, but as a herald of a significant change in moisture 

 content, Briza media puts in a somewhat unexpected appear- 

 ance. 



Florula of the depression : — 



Carex Goodenowii d 



Juncus glaucus sd 



Lychnis Flos-cuculi / 



Valeriana dioica / 



Hydrocotyle vulgaris la 



Pulicaria dysenterica a 



Gymnadenia conopsea 



Orchis maculata (agg.) f 



Helleborine palustris a 



Juncus effusus 



Agrotis alba 



Poa trivialis 



Equisetum hyemale r 



Hypnum spp a 



In the main area the following were observed : — 



Ranunculus Ficaria a 



R. repens r 



Caltha palustris a 



Trollius europaeus a 



Thalictrum flavum la 



Cardamine pratense 



Stellaria uliginosa /" 



Lychnis Flos-cucuh a 



L. dioica J 



Geranium pratense a 



Hypericum tetrapterum 



Angelica sylvestris a 



Oenanthe fistulosa r 



Heracleum sphondy Ilium 



Hydrocotyle vulgaris r 



Galium palustre /" 



Valeriana sambucifolia a 



V. dioica f 



Scabi.osa succisa a 



S. arvensis / 



Senecio aquaticus o 



S. erucifolius vr 



Taraxacum palustre /' 



Spiraea Ulmaria la 



Poterium officinale la 



Crataegus oxyacantha vo 



Parnassius palustris a 



Epilobiuni hirsutum a 



E. palustre f 



Primula veris... rr 



Rumex acetosa a 



R. conglomeratus 



Plantago lanceolata 



Orchis maculata (forms) a 



O. incarnata rr 



O. hybrid Heinzliana r 



O. hyb. mixta r 



O. hyb. ambigua r 



Gymnadenia conopsea f 



G. densiflora I 



Listera ovata f 



Iris pseudacorus , la 



Juncus spp a 



Triglochin palustre o 



Carex spp 



Schoenus nigricans 



