Reference:

Lok, A. F. S. L., K-x. Tan, X. Giam, T. P. Ng & H. T. W. Tan, 2008. The spread of Jacaranda obtusifolia Humb. & Bonpl. (Bignoniaceae) into the Central Catchment Nature Reserve, Singapore. Nature in Singapore, 1: 143-147. [Read article]