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Houstonia pusilla
Houstonia pusilla is a plant in the family Rubiaceae native to the United States and common in the southeastern and central parts of the country. It is a short plant 6 inches (150 mm) or less in height with a tiny blue toned, yellow centered four lobed flower with a 0.25–0.33 inch (6.4–8.4 mm) diameter. The plant has a center rosette form and green herbaceous foliage with leaves up to 0.5 inches (13 mm) long. The leaves are opposite and each flower grows from a single branch growing from the leaf axil. This plant requires full sun and blooms in spring and early summer. It is a groundcover multiplying by self sowing and grows in mildly acidic soil where the grass is thin and moisture is adequate to support the plant.
Spotted growing in a historic cemetery in Kennesaw, GA
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