FLORA OF THE EAST RIDING OF YORKSHIRE. 99 



533, Potent ilia norvegica. Linn. 

 Alien. 

 Frequent on the Dock Wastes, Hull. 



535. Potentilla Fragariastrum. E/irh., io6. 



(Barren Strawberry). 



Native, Brit., 1-7. March, III. 



A very common early spring plant in grassy lanes and 

 banks. 



538. P. Silvestris. Neck., 112. 



(Tprmentil). 



Native, Brit., 1-7. June, III. 



In peaty places, near Cottingham, Brandesburton, &c. 



539. P. procumbens. Sibth., 78. 



Native, Brit., 6, 7. June, III. 



Houghton Woods,* AUerthorpe, and Skipwith Common. 



540. P. reptans. Lum., 95. 



(Creeping Cinquefoil). 



Native, Eng., 1-7. July- 



Common. The form with double flowers near Market 

 Weighton (J.J.M.).* 



541. P. Anserina. Linn., 112. 



(Silverweed). 

 Native, Brit., 1-7. June, II. 



Ever}' roadside. 



543. P. argentea. Linn., 87. 



Native, Eng., 2. Jub'> ^• 



Only known with us amongst the Dock Waste plants. "" 



