CONTENTS OF VOL. XXVII. 



Vll 



xi 



XV 



Proceedings for Session 1915-1916 



Do. do. 1916-1917 



Do. do. 1917-1918 ...... 



Do. do. 1918-1919 ...... 



Some Plant Associations of N.W. Yunnan. By F Kinedon 



Ward, B.A., F.E.G.S 1 



On the Sino-Himalayan Flora. By F. Kingdon Ward BA 



F.E.G.S ' . ! 13 



Notes on the Flora of the Orkney Isles. By Arthur Bennett 



A-L-S " . . . : 54 



Periodicity in Iranspiration. By Sophie J. Wilkie, B.Sc. (Two 



Figures) j^^ 



Saxifrages of the Diptera Section, with Description of New 



Species. By Professor Bayley Balfour, F.R.S. ... 65 

 The Influence of Difterent Media on the Histology of Roots. Bv 



Sophie J. Wilkie, B.Sc. (Plate I) .... ' 75 



Rhododendron trichodadum, Franch., and its Allies. By Professor 



Bayley Balfour, F.R.S 79 



New Garden Dracocephalums from China. By W. W. Smith 



M.A., and George Forrest .... '89 



Note on Parasyringa, a New Genus of Oleaceae. By W. W. 



Smith, M.A. ' a. 



Rhododendron lacteum, Franch. By Professor Bayley Balfour 



F.R.S 



A Hybrid Potamogeton new to the British Isles. By Arthur 



Bennett, A.L.S. .... 

 On the Affinities of Scdu7n Praegtrianum, W. W. Sm., wiih a 



Tentative Classification of the Section Rhodiola. ' Bv R 



Lloyd Praeger, B.A. (Plates II-IV) . . ." 



Cavea : A New Genus of the Compositae from the East Himala\a. 



By W. W. Smith, M.A., and James Small, M.Sc. (Plate V) 119 

 Mosses of West Lothian (V.C. 84). By J. C. Adam 123 



Ceratophylhmi demersum, Linn., in the Orkney Isles. By Arthur 



Bennett, A.L.S. . 

 Ulex nanus, Forst., in Caithness. By Arthur Bennett, A.L.S. 

 Note on Insect Visitors to Corallorhiza innata and some othei 



Orchids in the Forth District. By William Evans, F.R.S.E 136 



97 

 104 



107 



134 

 135 



