222 FLORA Ol- THE EAST RlblNG OF YORKSHIRE. 



1902. Phegopteris Dryopteris. Fee, 73. 



(Oak-fern). 

 Native, Brit., 6, 7. July, IV'. 



Very rare. Only recorded from one locality, and that on 

 the chalk near Sledmere (Mr. T. Audas), 1897. 



1906. Osmunda reg-alis. Linu., 89. 



(Royal "Flowering" Fern). 



Native, Brit., 6, 7. June, IV'. 



Rare, in damp woods. In Langwith and VVeldrake lanes, 

 Langwith Woods. Baines says " verv frequent"; 1866, 

 (W.W.), Skipwith Common (VV^N.C.),'South Cliff (G.N.), 

 and (J.J.M., 1899). 



1907. Ophiog-lossum vulgratum. Linn., 87. 



(Adder's-tongue). 

 Native, Brit., 1-7. J"ly. 



Common in pastures in all the districts, and very 

 abundant, though small in size, in clayey soils. 



1909. Botrycliium Lunaria. Sw., 103. 



(Moonwort). 



Native, Brit., i, 2, 3, 4, 6, 7. May, II. 



Not infrequent on chalky or gravelly knolls in pastures. 

 Hornsea, where occurs V^ar. incisum, Milde (R.T.) (see 

 "Journal of Botanv," Aug. 1898); Beverlev (V'.N.U.); Risbv 

 Park (E.A.P.), 1887; near Brough (Mr. t. H. VVoodhead, 

 May, 1901 ; Y.N.U.), and in the same month near Burn 

 Park, Cottingham ; and abundant on tumuli. Hall Ings, 

 June 2 1 St, 1902.* 



EQUISETACE^. 



1910. Equisetum maximum. Uiui., 83. 



(Greater Horsetail. "Dutch Rushes"). 



Native, Brit., i, 2. May, II. 



Frequent in wet places, on clay cliff slopes near Brid- 

 lington* ; Kelsey Hill, Holderness (Mr. R. H. Philip); and 

 Leys Wood, North Grimston (V.N.U., 1902).* 



