Found in the following dictionaries
OTCWL2014 (NASPA Word List 2014)
"Silversword" Definition
noun
Any member of the genus Argyroxiphium of flowering plants with long, narrow leaves sometimes covered in silvery hairs.
Source: Wiktionary
A long-lived composite plant () of Maui and Hawaii that has a rosette of lanceolate leaves covered with hairs and that dies after producing a very tall raceme of numerous usually purplish or reddish flowers.
Source: Merriam-Webster
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