American spikenard and Subshrub

American spikenard noun - Unarmed woody rhizomatous perennial plant distinguished from wild sarsaparilla by more aromatic roots and panicled umbels; southeastern North America to Mexico.

Subshrub and American spikenard are semantically related. In some cases you can use "Subshrub" instead a noun phrase "American spikenard".

Subshrub noun - Low-growing woody shrub or perennial with woody base.

American spikenard and subshrub are semantically related. Sometimes you can replace phrase "American spikenard" with "Subshrub", this terms are similar.