What is "duboisia myoporoides"

Duboisine \Du*bois"ine\, n. (Med.) An alkaloid obtained from the leaves of an Australian tree ( Duboisia myoporoides), and regarded as identical with hyoscyamine. It produces dilation of the pupil of the eye.

Duboisia myoporoides, or Corkwood, is a shrub or tree native to high-rainfall areas on the margins of rainforest in eastern Australia. It has a thick and corky bark. The leaves are obovate to elliptic in shape, 4–15 cm long and 1–4 cm wide. The small white flowers are produced in clusters. This is followed by globose purple-black berries (not edible).