Foliage. Key characteristics: leaves may be unlobed and have prominent veination which gives it a "mattress" appearance.
Like annual morningglories, bigroot morningglory has a vining growth habit.
Flowers. Key characteristics: large tubular-shaped, white with purple centers.
Seed. Seed are reddish-brown, flattened and covered with long, soft hair.
Life cycle: perennial.