The freshwater swamp-forest of South Johore and Singapore - Corner, E. J. H. (Edred John Henry) (Botanic Gardens, Parks & Recreation Dept, 1978)

The Gardens' bulletin; Straits Settlements (Botanic Gardens, Singapore, 1928)

Malaya botanical exploration - Botanic Gardens (Singapore) (1930)

Minnesota algae - Tilden, Josephine E. (Josephine Elizabeth) (Published by authority of the Board of Regents of the University, 1910)

Das Pflanzenreich :regni vegetablilis conspectus - Engler, Adolf, 1844 -1930 (W. Engelmann, 1922)

Plant specimen labels and collecting lists : Sumatra - Burley, John S., 1950 - (1988)

Plant specimen labels and collecting lists : Sumatra - Burley, John S., 1950 - (1988)