Houstonia caerulea L.
Family: Rubiaceae
azure bluets,  more...
Houstonia caerulea image
Kitty Kohout  
Etymology: Houstonia: for Dr. William Houston, English botanist, who collected in Tropical America
Plants: erect, perennial, 2"-8" tall forb; fragile rhizomes in clumps up to 4" wide
Leaves: opposite, smooth, lower leaves on stalks about the same length as the blade, upper leaves almost stalkless
Flowers: light blue with a pale yellow center, 4-parted, 1/3"-1/2" wide, tubular with a flaring mouth, smooth throat; 1 flower per stalk, both terminal and from the upper leaf axils; blooms May-June
Fruits: flat capsule, much wider than long
Habitat: moist; prairies, meadows
Conservation Status: Special Concern
Houstonia caerulea image
Robert W. Freckmann  
Houstonia caerulea image
Eric J. Epstein  
Houstonia caerulea image
Botanical Illustration  
Houstonia caerulea image
Houstonia caerulea image
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