blackroot — English Dictionary

Noun

1. Several North American plants with black roots of: genus Pterocaulon, such as Pterocaulon pycnostachyum (dense-spike blackroot) and Pterocaulon virgatum (wand blackroot)

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2. Several North American plants with black roots of: species Veronicastrum virginicum (Culver's root)

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3. Several North American plants with black roots of: species Aletris farinosa (colicroot)

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4. Several plant diseases caused by fungi in the genus Aphanomyces causing that cause roots to rot and turn black.

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