165 



In the cases to be described the arrcingemeut of the foliage- 

 leaves changes in connection with their fission. The successive 

 pairs are indicated with «' and (i^, /;' and /^^ 



I. a' normal, a^ double apex, midrib split up above the base, t' normal, £2 normal 



c* » c^ » » » » » at » » fi' » (i2 » 



el » e2 » » /I » /"a , 

 All the following whorls consist of three leaves. 



II. a* double apex, q2 double apex i' » Ifl » 



The plant was dried in this stage of development 2). 



From the above it is seen that the doubling of the leaf as a rule, 

 but not regularly, is foreshadowed by its producing a double apex. 



Clerodendron paniculatum L. 

 Habitat Burma, Malaya, China. 

 Coll. April 1896. 

 Strongly fasciated inflorescence. 



According to Mr. Smith this aberration is in this species of 

 frequent occurrence. 



OLEACEAE. 



In several species of Jasminum Mr. Smith observed irregu- 

 larities in the arrangement and also a few in the development 

 of the leaves '). We intend to give a brief account of them 

 and for the sake of clearness remind the reader that in the 

 majority of the species the leaves are (normally) in pairs and 

 these at right angles and also that the same may be simple, 

 ternate or pinnate. 



1) In the axil of c^ there is a briinchlet, on which the lowest whoil consists of 

 only two leaves, whereas the higher ones nhow three of them. 



2) Compare Ann. de Buitenzor?, Vol. XIII, p. 103. 



3) Compare Penzig II on the leaves of Jaxininum officinale L. 



Ann. Jard. bot. Buitenz. 2e Serie, Vol. IV. 12 



