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Disk Water Hyssop (Bacopa rotundifolia)

• Family: Figwort (Scrophulariaceae)
• Flowering: May-September.
• Field Marks: This species, with small bluish flowers, has spherical, toothless leaves.
• Habitat: Around ponds and lakes, along streams, low woods.
• Habit: Perennial herb with creeping stolons.
• Stems: Creeping or floating if in water, branched or unbranched, usually hairy, up to 2 feet long.
• Leaves: Opposite, simple, spherical to obovate, rounded at the tip and at the base, sometimes clasping at the base, usually without teeth, smooth, up to 1 inch long and broad.
• Flowers: Blue, 1 or 2 in the axils of the leaves, up to 1/3 inch long.
• Sepals: 5, green, united below, asymmetrical.
• Petals: 5, bluish, united, 2-lipped, up to 1/3 inch long.
• Stamens: 4, shorter than the petals.
• Pistils: Ovary superior.
• Fruits: Capsules oblongoid, rounded at the tip, up to 1/4 inch long.