374 RKPORT OF THE BOTANICAL EXCHANGE CLUB. 



panicle and the radical leavo'? being very stronglv crisped. The 

 Hon. J. L. "^"arren in a lettei suggests that possibly the position 

 0^ elonf/ritii^ a Putney growing in the tidal mud and under water at 

 every tide may cause the root-leaves to uncurl and flatten out, and 

 he thinks that specimens which Mr. H. C. Watson got with him at 

 Putney, and now growing in his garden, are reverting to rather 

 crimped root-leaves. Mr. Watson supplied me with ripe seeds of 

 elojigatuSy but none of them have germinated. I have frequently found 

 the seeds of Docks lie dormant for two or three years, if they be not 

 sown immediately on ripeninsj, which is best." — J. T. Boswell. 



Rumex Il'/drohpathim. Huds. " Mr. t£. C. Watson has sent me 

 a number of examples of the radical leaves of i2. Hyclrolapathum from 

 the Thames side, near Moulsey, and Surrey Canal, from Woking to 

 Eyfleet, collected in 1874. These leaves show the transition from 

 the attenuate to the abrupt and even subcordate form of base. Some 

 of the specimens, particularly one from a plant by the Thames side 

 just above Moulsey Hurst, has broadly oval-ovate leaves, with sub- 

 cordate bases assigned to R. maximus, Schreb. Unfortunately this root 

 was so placed as to be a sort of stand for fishers, while the Thames 

 was low in summer ; thus no fruit-stem was perfected, and nowhere did 

 Mr. Watson find fruit-perianth so much dentate as in Sussex maximus. 

 For my own part I lay more stress on the shape of the enlarged petals 

 than on their dentition, and T have not seen any British specimens, 

 except Mr. Warren's Su-sex ones, which approach the Continental 

 maximus in shape and size. I have not yet been able to obtain British 

 specimens oi R. maximus, and should be much indebted to any bota- 

 nist, who may visit Lewes, for fresh or dried specimens of it. Mr. 

 Warren was kind enough to give me some ripe seeds, which, however, 

 have not germinated. I have some fears that they may never do so, 

 as I sowed five or six years ago Continental seeds which failed to 

 grow, though those of R. Ilippolapatlmm, Fries {aquaticus, * L.,' 

 Koch, &c.) gathered at the same time and treated in the same way 

 produced a number of plants. M. Crepin, in his * Notes sur quelques 

 Plantes rares ou critiques de la Belgique,' fasc. v., p. 78, endeavours 

 to show that R. maximus tends much more to R. aquaticus (i.e., Hip- 

 2)olapat]ium) than to R. Hydrolapatlmm. This is certainly not the 

 case with the British R. maximus^ — J. T. Boswell. 



Baphu Laureola. *' Seemingly in a wild state, growing on some 

 high and almost inaccessible cliffs near this (Seggieden, between 

 Balthayock and Glencorse), at a point far from any garden or 

 houses.'"— H. M. D. Hay, 1872. 



CeratopliyUum demersum.. " Pond on Weston Green, Thames 

 Ditton, Surrey." — H. C. Watsox. '' In a letter Mr. Watson mentions 

 that the spines at the base of the fruit elongate as the fruit grows, but 

 are scarcely perceptible at first." — J. T. Boswkll. 



SaJix undulaia, Ehrh. *' Near Cambuslaug, Lanarkshire, May 2, 

 1874."— RicuAKD McKay. 



Salix Forhyana. " Trysull, Wolverhampton, Staffordshire, Sep- 

 tember 2G, lS73."--JoBN Praper. 



Salix acuminata. " Trysull, Wolverhampton, Staffordshire, May 

 19, 1873."— John Feasf.h. "Also St. Germain's Loch, Kew Kil- 

 pa trick, Dumbartonshire."— Picuarp McK.\y. 



