This section is from the book "The Commonly Occurring Wild Plants Of Canada", by Henry Byron Spotton. Also available from Amazon: The Commonly Occurring Wild Plants Of Canada.
"Woody twiners, with peltate alternate leaves and small dioecious flowers. Sepals and petals yellowish-white, usually six of each, the petals in front of the sepals. Stamens numerous. Fruit a drupe, in appearance something like a small grape, with moon-shaped seeds.
M. Canadense, L. (Canadian Moonseed.) A twining plant, found, though not abundantly, in low grounds in rich woods. It may be pretty easily recognized by its usually 7-angled thin leaves, which are peltate near the edge. Fruit bluish-black.
 
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