Corkwood elm (Duboisia myoporoides) is a shrub native 
to Australia and New Caledonia. It contains an alkaloid 
duboisine in its leaves which has similar chemical 
composition as hyoscyamine. J. Bancroft of Brisbane was 
the first to experiment and use it clinically. Like atropine, 
topical application causes mydriasis and cycloplegia. 
Unlike atropine, its effects are shorter and less irritating to 
the eye.