US CODEX STAN 224:2001, Standard for tannia

This Uganda Standard applies to the tubercles of commercial varieties of lilac tannia grown from Xanthosoma violaceum Schott and white tannia grown from Xanthosoma sagittifolium (L.) Schott, of the Araceae family, to be supplied fresh to the consumer, after preparation and packaging. Tannias for industrial processing are excluded.

Source of regulation
The Uganda National Bureau of standards 
Publication of regulation
UGANDA GAZETTE Vol. CVIII No. 20 of 21 April 2015 
Date of implementation
21 April 2015 
Regulation file