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Family Acanthaceae

HAWAII - CULTIVATED

Odontonema tubaeforme

UH Manoa, Oahu

FIRESPIKE or CARDINAL FLOWER

Ornamental shrub native to Central America.  Leaves have an acuminate (narrowly elongate) tip, flowers borne on a single, rarely-branched spike.  Often misspelled Odontonema tubiforme.  A related Firespike, Odontonema cuspidatum has ovate leaves lacking an acuminate point and flowers borne on several axes.  It is sparingly naturalized in moist uplands of Hawaii.