OF THE SIERRA LEONE BOUNDARY COMMISSION. 65 
In naming this Collection I have had the kindest and most un- 
remitting assistance from Professor D. Oliver, Mr. C. B. Clarke, 
Mr. Baker, and all his assistants at Kew, as also from Mr. 
Carruthers’s staff at the British Museum. I have given new and 
doubtful forms at any rate to those who are authorities on 
particular orders or are at present working upon them; and 
have specially to thank those who have taken the following 
groups entirely off my hands :— 
Amaryllids, Lilies, and Iridacew, by Mr. J. G. Baker. 
Cyperacexe, Commelinacee, Mr. C. B. Clarke. 
Orchids, Mr. R. A. Rolfe. 
Solanacew and Cryptogams, Mr. C. H. Wright. 
Fungi, Mr. G. Massee. 
Apocynaceex, Dr. O. Stapf. 
The description of new and doubtful forms only in the follow- 
ing orders have been left to those mentioned :— 
Malvacee, Mr. E. G. Baker; Graminew, Mr. A. B. Rendle ; 
Scrophulariacexe (except one Dopatrium), Mr. W. B. Hemsley ; 
Ebenacee, Mr. W. P. Hiern; Acanthacew, Mr. Rolfe; Aroids, 
Mr. N. E. Brown; Melastomacex, Professor Cogniaux; <Aristo- 
lochia, Dr. Masters ; Labiate and other Corolliflore, Mr. J. G. 
Baker. 
I have to thank these gentlemen for the descriptions which 
they have kindly given me for insertion in this paper, which 
T have been careful not to alter in any way. The rest of the 
naming and description has been done by myself, and I have 
specially to acknowledge my obligation to Professor D. Oliver 
for his most kind assistance, and also to Mr. N. E. Brown, whose 
carefulness and 20 years’ experience of Herbarium work have 
been most valuable to me. 
I am also indebted to Miss A. Lorrain Smith for the very 
careful anatomical study which she has made for me of a plant 
without flowers which has greatly puzzled every systematic 
botanist to whom it has been shown; anatomical characters 
alone show that it probably belongs to Gentianacexe or Melasto- 
macew, and after carefully examining both orders it seems to 
me that it may be a new genus of the latter near Lavoisiera. 
Miss Smith’s observations will probably be given in another 
memoir. .. 
The first set of the plants is at Kew, the second at the British 
Museum, the third has gone to Berlin, the fourth : Harvard, 
Fi 
