The large tuberous root of a kind of milkweed (Asclepias tuberosa), used as a remedy for pleuritic and other diseases. / The plant itself, which has deep orange-coloured flowers; butterfly weed.

The bark from the roots of a woody plant.

A root growing from the above-ground stem or trunk, and providing support.

Gillenia trifoliata, a herbaceous perennial in the Rosaceae family, native to eastern North America, with pale pink flowers.

A physiological phenomenon in fish hemoglobin, whereby an increased proton or carbon dioxide concentration (lower pH) lowers hemoglobin's affinity and carrying capacity for oxygen.

plural of biscuit root

A plant of the species Polygala senega

Alternative form of biscuitroot (Lomatium)

The root of the herb Veronicastrum virginicum, used as a cathartic and emetic.

Alternative spelling of roots reggae