Smilax tamnoides, common name bristly greenbrier,[2] is a North American species of plants native to the United States and Canada.

It is widespread from Ontario and New York State south to Texas and Florida.

Smilax tamnoides is a climbing, prickly vine that supports itself on other vegetation.

Flowers are green to brown, small but numerous in umbels; fruits blue to black without the waxy coating common on many other species of the genus.

[4] It is as a special concern species and believed extirpated in Connecticut.