An alcohol solution turns curcuma test paper brown.
"A System of Instruction in the Practical Use of the Blowpipe" by Anonymous
Other changes of vegetables from climate, or other causes, are remarked in the Note on Curcuma in the same work.
"Zoonomia, Vol. I" by Erasmus Darwin
Turmeric (curcuma) is a root of general use.
"The History of Sumatra" by William Marsden
The nitrocellulose is made from curcuma.
"The New Gresham Encyclopedia" by Various
Hidden Ginger (Curcuma petiolata) hides a lovely delicate bloom deep in its luxuriant leaves.
Turmeric (Curcuma longa) is a culinary spice, a major ingredient in Indian curries, and the source of American mustard's bright yellow color.