48 PROOBBDINGS OF THE 



June 6th, 1918. 



Sir David Prain, C.M.G., C.I.E., F.E.S., President, 

 in the Chair. 



The Minutes of the Anniversary Meeting of the 24th May, 

 1918, were read and confirmed. 



The report of the Donations received since the Anniversary 

 Meeting was laid before the Fellows, and tlie thanks of the 

 Society to the several Donors were ordered. 



The President announced that he had appointed the following 

 as \'ice-Presidents for the ensuing year: — Dr. W. Bateson, F.R.S., 

 Mr. HoRACB W. MoNCETON, Treas.L.S., Prof. H. G. Plimmee, 

 F.R.S., and Dr. D. H. Scott, F.E.S. 



The Eev. Canon George Russell Bullock- Webster, M.A. 

 (Cantab.), Mr. Heber Albert Longman, Mr. Arthur William 

 Eymer Roberts, M.A., and Mr. William AVright Smith were 

 elected Fellows, and Mr. Walter Watson, B.Sc. (Lond.), an 

 Associate. 



Mr. C. C. Lacaita, F.L.S., gave an abstract of his paper, " A 

 Eevisiou of some critical species of Ecliium as exemplified in the 

 Liniiean and other herbaria, with a description of Echmmjudceum, 

 a new species from Palestine." He explained that this paper fell 

 under five divisions : — (1) On five critical species of Echium, 

 namely, E. jndceum, mibi, E. cmstrale, Lam., E, Coincyaymm, mihi, 

 E. pijcnantJium, Pomel, and E. salmaticiim, Lag. ; (2) The genus 

 Echium in the herbaria of Tournefort, J ussieu, and Lamarck ; 

 (3) The Echia in Sibthorp's herbarium ; (4) The Linnean species ; 

 and (5) The Echia of Miller's ' Gardener's Dictionary ' of 1768. 



Dr. O. Stapf, the General Secretary, and Mr. F. N. Williams 

 engaged in a discussion, the Author replying. 



Capt. A. W. Hill, F.L.S., showed a series of seedlings of 

 Cyclamen. Normally only one cot3'ledon develops, the other 

 remaining as a rudiment at tlie apex of the hypocotyl or tuber. 

 If the lamina of the cotyledon be removed, new laminae arise as 

 outgrowths from the petiole just below the cut surface ; but if the 

 cotyledon with its petiole be removed, the rudiment of the second 

 cotyledon is stimulated to develop into an assimilating organ. 

 On removal of the lamina of this second cotyledon new laminae 

 will be formed from the inner edges of its petiole close to the 

 apex exactly as is the case with the cotyledon proper. When 

 plumular leaves are so treated no new laminae are regenerated. 

 Further cotyledon leaf-cuttings will produce roots from the base 

 of the petiole, while plumular leaf-cuttings remain rootless. 



