NEW OR NOTEWORTHY FUNGI 193 



equidistant septa. In a similar way to this Phoma Pinastri 

 Lev. = Splioiropsis Ellisii Sacc. is really a D/jj/oc/ia = D. Pinastri 

 Grove. 



(To be concluded.) 



LATE GLACIAL PLANTS OF THE LEA VALLEY. 

 By Clement Eeid, F.R.S. 



[The Quarterly Journal of the Geological Society (Ixxi, pt. 2, 

 pp, 155-161, 1916) contains a paper by Mr. Clement Eeid on 

 " The Plants of the Late Glacial Deposits of the Lea Valley," 

 Middlesex, which was read before the Society by the author on 

 February 23rd last. It contains matter of such exceptional interest 

 in connection with the early history of our flora that we have 

 obtained permission from the Society to reprint the greater part 

 of it in these pages. A plate accompanying the paper (in 

 Q. J. G. S.) represents the material on which Silene ccelata and 

 Linum p'cecursor are based. — Ed. Journ. Bot.] 



Since Mr. Hazzledine Warren's paper was published in 1912 '^ 

 much work has been done in the pits at Bonder's End and Angel 

 Road. Two other pits in the same district have also been investi- 

 gated,! these being situated at Hedge Lane and Temple Mills. 

 Thanks to the efforts of Mr. Warren, Mr. A. Wrigley, and Mr. E. T. 

 Newton, a large amount of botanical material has been collected, 

 and the flowering plants have been sent to me for examination. 

 The additions thus made to the list are so numerous that we 

 have now obtained one of the most interesting Arctic floras yet 

 discovered in these low latitudes. | Several of the species until 

 the present time have been unrecognised in the fossil state, and 

 two seem to be new to science. In these circumstances it seems 

 advisable to place on record the new finds, especially as some of 

 them may be of zonal value. § . . 



To how great an extent the peculiarities of this extinct Arctic 

 flora of the Lea Valley are due to exceptional conditions of soil 

 is not clear. It may prove that the presence of certain plants 

 unknown elsewhere is assignable to the occurrence of an area of 

 bare chalk in the higher stretches of the Lea Valley ; nearly all 

 the other British deposits yielding Arctic plants lie in catchment- 

 basins of Boulder Clay, or of hard non-calcareous rock. 



* Q. J. G. S. vol. Ixviii, pp. 213-51. 



t Proc. Geol. Assoc, vol. xxv (191-4), pp. 285-87. 



X For the original list, see F. J. Lewis, in Warren, Q. J. G. S. vol. Ixviii 

 (1912), p. 229. 



§ Specimens of all the species have been sent to the British Museum 

 (Natural History), and of most to the Museum of Practical Geology also. 



