I know it as S. lasioneura and have a pressed specimen somewhere. Don't think it is very rare.

Thanks Lycopus. Carrion Flower is on my list of Native New Hampshire Plants That I have Never Seen But want to Grow.

Also on this list:

2. Great Solomon's Seal polygonatum commutatum This plant can grow 7' tall.

3. American Spikenard aralia racemosa A large woodland perennial 6' tall with showy flowers and big bunches of berries. Indians once dug up and ate the roots.

4. Arrow Arum peltandra virginica One of the most northern members of the Arum Family. Related to the Taro plant, one of the most important food plants in the world. Can grow in shallow water and does not need full sun. I like the tropical appearance of this plant.

I finally found the elusive carrion flower. It is instantly recognizable due to its large clusters of blue fruits. Each fruit contains 4 seeds. I will plant a bunch of seeds this spring. Prepare for smilax invasion !