165 
In the cases to be described the arrangement of the foliage- 
leaves changes in connection with their fission. The successive 
pairs are indicated with a' and a, 6' and 6’. 
I. a’ normal, a? double apex, midrib split up above the base, b' normal, 0? normal 
cl > c2. 3 » > +r ko ot Ot pe sete +. = ae > 
el » ez» > ye >» f2 > 
All the following whorls consist of three leaves. 
II. at double apex, a? double apex bi > 2 » 
of... » » c¢2 two leaves. All the following whorls normal. 
Ill, at» » a? double apex bt normal b2— » 
c! normal ee > ee 
el» ez > » The plant was arrested in its further development 
Val > a2 > > b' normal, 42 normal 
7 ee c » » 1) di » dd? > 
e! double apex e? two leaves f1 » f%twoleaves. 
“V. at normal a? double apex b' normal, 6? no: mal 
ce! > c2 > » di > d? > 
The plant was dried in this stage of development ?). 
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. Ssita this aberration is in this species of 
frequent occurrence. 3 
: OLEACEAE. 
In several species of Jasminum Mr. Surri 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 branchlet, on which the lowest whorl consists of 
only two leaves, whereas the higher ones show three of them. 
2) Compare Ann. de Buitenzorg, Vol. XIII, p. 103. 
3) Compare Penzic II on the leaves of Jasminum officin 
Ann. Jard. bot. Buitenz. 2e Série, Vol. iN; 
ale L. 
