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Distribution and localisation map 

Azure bluets

Houstonia caerulea

Houstonie bleue

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Blue Houstonie is in flower only during two or three weeks at the end of the spring.
It possesses two types of flowers: flowers with long style but with short stamens , which obliges the fertilization by another plant, and flowers with short style but with long stamens which allow self-fertilization.
Azure bluets (Houstonia caerulea)
Azure bluets : 1- Fleurs
Azure bluets : 2- Short style flower
Azure bluets : 3- Flower
Azure bluets : 4- Long style flower
Azure bluets : 5- Flowers
Azure bluets : 6- Colony
Photos of  Houstonia caerulea