Cymbopogon coloratus, Stapf (Andropogon coloratus, Nees; A. Nardus var. coloratus, Hook. f.), occurs in the Tinnevelly district to the Anamalai mountains, also in the province of Kar-natik (Madras Presidency). It belongs to the lemongrasses of the Malabar districts. It differs from C. flexuosus by being much smaller1).
In the Fiji islands an oil has been distilled from this grass2), the yield of which was not ascertained. It had the odor of a mixture of lemongrass oil and Java citronella oil. Its density was 0,920. It contained 42 p. c. of constituents that reacted with bisulphite, also 15 p. c. of geraniol. It yielded a clear solution with 70 p. c. alcohol. In the Fiji islands this oil is known as "lemongrass oil." Somewhat later3) three other distillates were described. All had an odor reminding one simultaneously of citronella and lemongrass oils. The color varied from golden yellow to brown, the rectified oil was lighter in color. Further investigation of the crude oils led to the following results: d15o0,9155 to 0,920; aD - 7° 43' to - 8° 40'; geraniol 15,6 p. c; citronellal 45,7 to 49,5 p. c; constituents reacting with bisulphite 42,0 to 43,5 p. c. With 1 vol. of 80 p. c. alcohol, the oils yielded clear solutions; in 70 p.c. alcohol they were either insoluble or the 1:3 clear solution became turbid upon the addition of more alcohol. The rectified oil showed like solubility and was further characterized by the following constants: d15o 0,9111; aD - 10°42'; constituents reacting with bisulphite 42 p. c.