256 Yorkshire Naturalists at Askern. 



Limestone forming Askern Mount. Triassic (Bunter) sand was 

 seen in section below the limestone gravels in the adjoining 

 gravel and sand pit, and an interesting discussion took place 

 as to the relation of the sand to the limestone. A suggestion 

 was made by the writer that the Mount is an instance of an 

 overthrust fault. 



At the subsequent meeting, the thanks of the Geological 

 Section were given to Mr. J. W. H. Johnson, B.Sc, for his 

 report on the composition of the Upper Permian Limestone in 

 South Yorkshire {Naturalist, September 1911, p. 308). This 

 report arose out of a discussion which took place at the York- 

 shire Naturalists' Union Meeting at Askern in 1906. 



Botany. — Dr. Woodhead writes : — The neighbourhood of 

 Askern possesses many features of interest to botanists. Sutton 

 Common is a grassy marsh with numerous water-logged hollows, 

 pools and drains supporting a rich marsh and aquatic vegeta- 

 tion. The ground-water is very high, as indicated by the 

 abundance of such plants as Marsh Pennywort {Hydrocotyle 

 vulgaris), Amphibious Bistort {Polygonum amphibium), Lady's 

 Smock {Cardamine pratensis), Spearwort {Ranunculus Flam- 

 mula). Flea Bane {Pulicaria dysenterica). Marsh Arrow-grass 

 {Triglochin palustre), and Marsh Orchis {Orchis latifolia). 

 Prominent features in the flora were masses of Meadow Sweet 

 {SpircBa Ulmaria) and meadow rue {Thalictrum flavum) in full 

 flower, and around the pools a reedy belt of the Common Reed 

 {Phragmites vulgaris). Cut-sedge {Cladiiim Mariscus), Yellow 

 Iris {Iris Pseudacorus), Bur-reed {Sparganium simplex), 

 Purple Loosestrife {Lythrum salicaria), Water Figwort {Scroph- 

 ularia aquatica), and at Shirley Pool, in addition to the above, 

 were the Great Water-Dock {Rumex Hydrolopathum) , Water 

 Plantain { Alisma plantago). Greater Spearwort {Ranunculus 

 lingua). Reed-Mace {Typha angustifolia), Cyperus Sedge (Carea; 

 pseudo-cyperus) , and in the adjoining Shirley Jungle the Marsh- 

 fern {Dryopteris Thelpyteris) grows abundantly among the 

 reeds in the Alder- Willow Swamp. On the sides of the drains 

 were several rushes {Juncus supimis, conglomeratus and 

 glauca), also Water Dropwort {(Enanthe fistulosa), Celery- 

 leaved Crowfoot {Ranunculus sceleratus). Brook- weed {Samolus 

 Valerandi), Brook-lime {Veronica Beccahunga). 



In the water were the Marestail {Hippuris vulgaris), 

 Water Crowfoot {R. trichophyllus) , Water Speedwell (F. Ana- 

 gallis). Water Cress {Radicula Nasturtium), Horned Pondweed 

 {Zannichellia palustre). Plantain leaved Pondweed {Potomogeton 

 color atus), and Water Starwort {Callitriche intermedia). In 

 the fields adjoining the Common, the Hawksbeard {Crepis 

 taraxaci folia) was found. 



Fungi. — Mr. W. N. Cheesman reports : — The writer and Mr. 

 J. W. H. Johnson investigated the woods adjoining Shirley 



Naturalist, 



