Taxa: Elymus hystrix (Hystrix patula, Hystrix hystrix, Asperella angustifolia, Asprella americana, Asprella hystrix, Asprella major, Gymnostichum hystrix, Zeocriton hystrix, Asperella hystrix var. hystrix), Elymus hystrix var. hystrix (Elymus pseudohystrix, Asperella echidnea, Asperella hystrix, Gymnostic
... (show all)hum patulum, Hystrix elymoides, Elymus hystrix f. hystrix, Hystrix patula var. patula), Elymus hystrix var. bigelovianus (Elymus hystrix var. bigeloviana, Elymus hystrix f. bigelovianus, Hystrix patula var. bigeloviana, Asperella hystrix var. bigeloviana, Hystrix patula f. bigeloviana)