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Photographer: Merel R. Black
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Family Rubiaceae
Houstonia longifolia Gaertn.
long-leaved bluets
Houstonia: for Dr. William Houston, English botanist, who collected in Tropical America
longifolia: longus for "long, extended;" folius for "leaves"
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| Status: | Native |
| Plant: | erect, perennial, 3"-10" tall forb, several stems often branching toward the top |
| Flower: | blue-purple to white, 4-parted, 1/4"-1/3" wide, tubular with a funnel-shaped mouth, hairy throat; inflorescence a terminal, branched cluster (cyme) of many, short-stalked, crowded flowers; blooms June-Aug. |
| Fruit: | rounded capsule |
| Leaf: | all stalkless, opposite, widely linear to narrowly oblong, mostly smooth |
| Habitat: | dry; prairie, barrens; in rocky, sandy soil |
| (Glossary) |
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