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Dryad

Tetramolopium stemmermanniae sp. nov. (Asteraceae), a new species found at Pōhakuloa Training Area, Hawaiʻi Island

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Abstract

A new species endemic to Hawaiʻi Island, Tetramolopium stemmermanniae, is described and illustrated. Molecular and morphological evidence support Tetramolopium stemmermanniae as being distinct from Tetramolopium arenarium var. arenariumTetramolopium consanguineum ssp. leptophyllum, and Tetramolopium humile ssp. humile, which occur at Pōhakuloa Training Area, Hawaiʻi Island. Tetramolopium stemmermanniae shares an upright and multibranched habit as that of Tetramolopium arenarium var. arenarium and Tetramolopium consanguineum ssp. leptophyllum. It differs in ray and disc flower color and number, and in having an open, paniculate inflorescence. We provide a description of the new taxon, include a key to the Tetramolopium species of Hawaiʻi, and a brief description of the habitat where it occurs.