440 
WRIGHT: FOLIAR PERIODICITY 
I now quote a synopsis of deciduous species which show 
a wide variation in foliar periodicities in Ceylon and 
Java :— 
Species. 
Periodicity. 
Buitenzorg' (Treub). Peradeniya. 
Albizzia Lebbek ... Leaves fall in March ... Leaves fall in December 
and January. 
Bombax malabari- Leaves fall in July ... Generally speaking, the 
cum leaves fall in Decem¬ 
ber, flowers appear in 
January and February, 
fruits set and disburse 
their seeds in March 
and April, and new 
leaves appear April to 
May. 
Cassia nodosa ... Leaves fall in May and Leaves fall in January 
July to March ; new leaves 
appear in April. 
Chickrassiatabularis Leaves fall in April ... Leaves fall in January 
to February and new 
leaves appear in 
March. 
Derris robusta ... Leaves fall in March .. Leavesfall December to 
March. 
Dalbergia Melan- Leaves fall in March to Leaves fall from Jan- 
oxylon May uary to March and 
new leaves appear in 
April. 
Plumeria acutifolia Leaves fall in July to Usually the leaves drop 
August during December and 
January. 
Peltophorum ferru- Leaves fall irregularly ; Leaves fall irregularly 
gineum July (1898) ; March, during December to 
1899 January and June to 
July. 
Schizolobium excel- Leaves fall very irre- Yerv regular. Leaves 
sum gularly fall from the end of 
January throughout 
* February, and by the 
10th March the tree is 
leafless ; is in flower 
and new leaf by 15th 
March. 
Schleichera trijuga Leaves fall in April ... Leaves fall during Feb¬ 
ruary and March on 
tree in open, and 
irregularly on a tree 
under partial shade. 
Sapium biglandulo- Leaves fall in April ... Leaves fall from Feb- 
>um ruarv to April. 
