SLATER : FLORA OF RIPON. 141 



505. M. alterniflorum. Alternate -flowered water-milfoil. 



Still water, commoner than last. River Ure and canal. 



506. Hippuris vulgaris. Mare's tail. Stagnant water, not 



common. Pond in Bell wood, Knaresborough 

 (Baines). Pond on the old Race-course, Ripon. 

 Baines records it from Staveley Carrs, which are now 

 completely drained. 



507. Callitriche verna. Water star-wort. Pools and wet 



places, common. 

 509B. C. platycarpa. Sharow mires, in small quantity. 

 510. C. hamulata. Whitemere (or Raygill Dyke) on Hutton 



Moor. Var. pedwiculata in other small ponds on 



Hutton Moor ; Sharow mires. 



513. Bryonia dioica. Red-berried bryony. Hedges, 



abundant. 



514. Ribes grossularia. Gooseberry. Both varieties occur 



in woods and hedges, probably introduced by the 

 agency of birds. 



515. R. alpinum. Alpine currant. Common on all rocks 



and walls near Fountains, doubtless originally intro- 

 duced. Baines records it from woods near Ripon, 

 but I have only seen one bush outside the grounds 

 of Fountains, which was shewn to me by the Rev. 

 J. S. Tute on the banks of Markington beck, and 

 which had probably escaped from a garden or was 

 sown by the agency of birds. 



517. R. nigrum. Black currant. Woods and hedges, 

 probably sown by birds. 



525. Sedum acre. Yellow wall stone-crop. Walls and 

 roofs, not uncommon. Fountains, &c. 



527. S. reflexum. Crooked yellow stone-crop. Is said to 

 grow on old walls in this neighbourhood. Plentiful 

 in cottage gardens. 



530. Sempervivum tectorum. Houseleek. Walls and 

 roofs of cottages, occasional. 



