156 
Clianthus Binnendykianus Kurz. 
Habitat Ceram. 
Coll. September 1897. 
Two leaflets grown together and alternating with a pair of 
the other side of the common petiole (fig. 50). 
Sophora violacea Thw. 
Habitat Ceylon. 
Coll. 1597. 
According to Kirin the leaves generally unequally pinnate 
frequently become equally pinnate in consequence of splitting 
up of the terminal leaflet. From what follows it will be clear 
that Kiem probably has been wrong and that his equally pin- 
nate leaves have become so on account of the terminal leaflet 
having grown rudimentary. The material examined was furn- 
ished on a large scale by a specimen which commenced pro- 
ducing abnormal leaves on a large scale. The changes refer to 
the terminal leaflet as well as to the lateral ones of the upper 
half of the leaf, the inferior ones maintaining their normal 
character. 
The terminal leaflet may be: cup-shaped even to threadlike 
with all transitory forms between them (figg. 5le, 52¢, 53, 
D4, 55¢). The lateral leaflets show all degrees of coalescence 
and this in such a way 1° that the petiolules of a pair cohere, 
whereas the blades remain free, 2° that also the blades unite 
(fig. 56), a) they either take the shape of a bifid whole (fig. 57) 
or 6) uniting also the other margins transform the bases into 
a cup (fig. 58) or 3° are reduced to a little thread (fig. 594). 
It is worth noting that if two leaflets of the same pair 
grow together the whole is at nearly right angles with the upper _ 
surface of the compound leaf. In one case it occurred that a 
leaflet is at the back and at top only folded up to a cup 
(fig. 60), i.e. in the same way as has been observed in 77- 
folium repens), Codiaeum and Fragaria, p. 153. In order to 
1) Botanisch Jaarboek, published by the Botanical Society Dodonaea 1892, p. 13. 
