🌷Hey @blaze312! Great question! I looked it up, and this is what I found according to Wikipedia:

Berberis darwinii is a species of barberry in the family Berberidaceae, native to southern Chile and Argentina and naturalized elsewhere. English common names include 'Darwin's Barberry'.
Vernacular names include michay, calafate, and quelung.

It is an evergreen thorny shrub growing to 3–4 m tall, with dense branches from ground level. The leaves are small oval, 12–25 mm long and 5–12 mm broad, with a spiny margin; they are borne in clusters of 2–5 together, subtended by a three-branched spine 2–4 mm long. The flowers are orange, 4–5 mm long, produced in dense racemes 2–7 cm long in spring. The fruit is a small purple-black berry 4–7 mm diameter, ripening in summer.
https://en.wikipedia.org/wiki/Berberis_darwinii

I hope this could answer your question! Thanks! I learned something new too.
Take care! :)