blackroot

Etymology

From black + root.

blackroot means several North American plants with black roots of:; genus Pterocaulon, such as Pterocaulon pycnostachyum (dense-spike blackroot) and Pterocaulon virgatum (wand blackroot). Lexicurio rates it Sui generis — a strength score of 94 out of 100.

noun

Several North American plants with black roots of:; genus Pterocaulon, such as Pterocaulon pycnostachyum (dense-spike blackroot) and Pterocaulon virgatum (wand blackroot)
Several North American plants with black roots of:; species Veronicastrum virginicum (Culver's root)
Several North American plants with black roots of:; species Aletris farinosa (colicroot)
Several plant diseases caused by fungi in the genus Aphanomyces causing that cause roots to rot and turn black.