bda_biodiversity's Identifications

Limonium companyonis – Island Heather, has a basal rosette of leaves, pretty lilac flowers and grows in saline marl. It is native to the Mediterranean coast of France. Its mode of introduction to Grand Cayman is unknown. It was first found at George Town Barcadere in 2003, then at Safehaven. It is the only naturalized plant in the Plumbago family in Cayman.
Flora of the Cayman Islands by George R. Proctor, 2012 p.285.
https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:686703-1

Leaves are Opposite. Roots send up erect pencil-like aerial structures, pneumatophores, which act as breathing tubes. They obtain gases from the atmosphere that are unavailable in the water-logged soils in which they grow. The roots filter out salt from the water. Additional salt solution is excreted through specialized glands on the surface of the leaves. The solution evaporates, leaving behind salt-crystals on the leaf surface, which can be seen (and tasted). Flowers make Black Mangrove an important honey plant. Fruit is a flattened capsule.
Black Mangrove is the larval food plant of the Mangrove Butterfly – Junonia evarete.
Flora of the Cayman Islands by George R. Proctor, 2012 p.585.
Kings 1938 GC 255, GC 270, LC 28.