| caulophyllum | (n) blue cohosh, Syn. genus Caulophyllum |
| eriocaulon | (n) type genus of the Eriocaulaceae: rushlike aquatic or marginal perennials usually found in shallow waters of acid lakes and pools and bogs, Syn. genus Eriocaulon |
| blue cohosh | (n) tall herb of eastern North America and Asia having blue berrylike fruit and a thick knotty rootstock formerly used medicinally, Syn. squawroot, Caulophyllum thalictrioides, squaw root, papoose root, Caulophyllum thalictroides, papooseroot, blueberry root |
| pipewort | (n) aquatic perennial of North America and Ireland and Hebrides having translucent green leaves in a basal spiral and dense buttonlike racemes of minute white flowers, Syn. Eriocaulon aquaticum |
| slender wheatgrass | (n) North American grass cultivated in western United States as excellent forage crop, Syn. Agropyron trachycaulum, Elymus trachycaulos, Agropyron pauciflorum |