13 
Looking back upon the numerous variations and disturbances 
we arrive at the following conclusions: 
bo 
I 
ox 
rr) 
° 
that the alae of the petiole are as for their width liable to 
various degrees of development. 
that the top often doubles in connection with fissure of the 
the midrib which fission finally leads to two separate leaves 
(forking). : 
that on account ef the crammed position of the leaves espec- 
ially at the top of the shoot two of more leaves are caused 
to coalesce. 
that the apex in consequence of a stunted midrib may cause 
various degrees of top-incision. 
that the blade in consequence of lateral incision tends to 
compound leaves (reversion). 
that the articulation between blade and petiole may disap- 
pear altogether thus completing the reduction of a folium 
compositum to a folium simplex. 
The said passage is according to our opinion the most striking 
deviation. For as all the other aberrations are to be looked upon 
as 
cases of reversion, has the latter the character of mutation, 
comparable, in a sense, with the var. simplicifolia of Glycosmis 
pentaphylla D.C. 
MELIACEAE. 
Dysoaylum amooroides Miq. 
Legit J. C. v. p. M. M., Nov. 1920, Palimanan, Cheribon. 
Odd leaflet coalesces with one of the highest pair to a two- 
topped whole. 
SAPINDACEAE. 
Nephelium lappaceum UL. 
Legit J. C. y. p. M. M., April 1920, Buitenzorg. 
Germination inside the fruit. Cotyledons unequal in size. 
Erioglossum edule Bi. 
Legit id., Oct. 1920, Palimanan. 
