Smilax illinoensis

Smilax illinoensis , the Illinois greenbrier, is a North American species of plants found only in the United States and Canada. It is native primarily to the Great Lakes Region with a few populations farther south in Missouri and in the Ohio Valley.

Smilax illinoensis  is an erect, unbranched herb up to 100 cm (39 inches) tall, with no prickles. It grows in woods and thickets.