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Vegetative plants.  Key characterisics: leaves are alternate, densely pubescent, large and heart-shaped.  Foliage has a unique foul odor from the resin that it secretes.

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Flowers are pinkish-white and may have yellow and purple spots.

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Fruit.  Key characteristics: "beaked-shape" capsule.  Image courtesy of Dean Wilson, University Outreach and Extension East Central Regional Agriculturalist.

Seed.  Seed are brownish-black and very rough-textured.  Length is approximately 9.0 mm with a width of approximately 6.0 mm at their widest point.

Life cycle: summer annual.