Morphological Notes. 
BY 
Sir W. T. THISELTON-DYER, K.C.M.G., C.I.E., F.R.S., 
Director , Royal Botanic Gardens , Kew. 
With Plates XIV and XV. 
VII. Evolution of Pitchers in Dischidia 
RAFFLESIANA, 
I T is a great many years ago since I derived my first know- 
ledge of the pitchers of Dischidia rafflesiana from the 
pages of Lindley’s Introduction to Botany (i, 302) and of 
Carpenters classical Comparative Physiology (4th ed., 1884, 
152). It had long been my ambition to have so interesting 
a plant under cultivation at Kew, and this, as stated in the 
Kew Bulletin (1892, 284), was at last accomplished in 1890 
through the kindness of Dr. Treub, the Director of the 
Botanic Gardens, Java. Since then it has been grown at 
Kew continuously and with success. 
Dischidia rafflesiana has been the subject of a copious 
literature. At first sight it might seem improbable that after 
the admirable and exhaustive monograph of Dr. Scott and 
Miss Sargant (Annals of Botany, 1893, 243-262, tt. xi, xii) any 
new fact could be added to our knowledge of the morphology 
of the pitchers. It is, however, one of the results of the 
change of conditions effected by cultivation to rouse latent 
tendencies and to develop atavistic forms which are often 
[Annals of Botany, Vol. XVI. No. LXII. June, 1902.] 
