982 



floated the Udora down from Rugby, in the vicinity of which it flou- 

 rished, and have thus established it at Stratford ; but the rapidity of 

 its growth in one season seems astonishing. T shall now watch its 

 advent down the Avon into Worcestershire ; but hitherto, though I 

 saw a friend from near Eckington yesterday, it has not been reported. 

 The 'soft-flowing Avon' is so still a river, that I fear the Udora 

 will become as great a nuisance there as in Cambridgeshire. My 

 friend says we shall be sure to have it soon, as boats, in passing, 

 break off" the brittle stems, thus leaving it to float with the current." — 

 Edwin Lees; Cedar Terrace, Henwick, Worcester, Jime 17, 1853. 



Gymnosiomnm tenue in Yorkshire. 



" I take the liberty of sending you a few specimens of Gymnosto- 

 mum tenue, gathered by me, a fe^^ days since, from the ruins of the 

 Abbot's House, Fountain's Abbey, Yorkshire. It may perhaps interest 

 some of the readers of the 'Phytologist' to know that this compara- 

 tively rare moss grows and fruits abundantly at the above-mentioned 

 place." — Arthur Hutchinson ; Bury, Lancashire, June 15, 1853. 



Claytonia perfoliata. 



The President called the attention of the Club to the rapid increase 

 of this North- American plant. The cause of its introduction into this 

 country, he said, did not seem very obvious ; but, owing to the abun- 

 dance of its seeding, the facility with which the seeds germinate, and 

 the adaptability of the plant to our climate, it bid fair to become as 

 thoroughly naturalized as any plant of Transatlantic origin. No one 

 would presume to call in question its exotic origin ; but, in after 

 years, it would probably take its station, by the side of Senecio vul- 

 garis and Capsella Bursa-pastoris, as a common gai'den weed. This 

 pretty plant was well known to Loudon, who notices its good qualities 

 as a vegetable, — a statement fully confirmed by Mr, Pamplin and 

 others. Mr. Thomas Corder records (Phytol. iv. 485) that it grows, 

 in yearly increasing abundance, in the vicinity of Ampthill ; and that 

 he cannot learn of its ever having been cultivated in the neighbour- 

 hood where it is found ; and Mr. Reynolds states that Mr. Corder has 

 sent a supply of specimens, gathered during the present year, for dis- 

 tribution among the members of the Phytological Club. Mr. John 

 Hutchinson has found it this year, growing in great abundance among 

 chickweed, and apparently perfectly established, at Wcybridge, in 

 Surrey ; and here the plants are of great size and luxuriance. The 

 late Mr. Anderson introduced the Claytonia into the IJotanic Garden 



