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''Dubautia imbricata'' is a rare species of flowering plant in the aster family known by the common names bog dubautia and imbricate dubautia. It is endemic to Hawaii where it is known only from the island of Kauai. There are four known occurrences.〔(''Dubautia imbricata''. ) The Nature Conservancy.〕 Like other ''Dubautia'' this plant is known as ''na`ena`e''.〔USFWS. (Species Reports: Listed Plants. )〕 This member of the silversword alliance was first described to science in 1981 after it was discovered in a Kauaian rainforest.〔St. John, H. and G. D. Carr. (1981). (Two new species of ''Dubautia'' (Compositae) from Kauai. ) ''Bulletin of the Torrey Botanical Club'' 108:2 198.〕 It grows in just a few spots in boggy forest habitat in the understory of ʻōhiʻa lehua (''Metrosideros polymorpha'') trees among sedges in the genera ''Oreobolus'' and ''Rhynchospora''.〔USFWS. (Determination of Endangered Status for 48 Species on Kauai and Designation of Critical Habitat; Final Rule: ssp. ''imbricata''. ) ''Federal Register'' April 13, 2010. pg 18965.〕 There are two subspecies. Both are rare and ssp. ''imbricata'' was federally listed as an endangered species of the United States in 2010.〔 This plant is a clumpy, bushy shrub which reaches 2.5 meters tall by 2 meters wide. The oppositely arranged leaves are up to 15 centimeters long by 2.5 wide. The inflorescence is a cluster of many flower heads, each of which contains several yellow flowers.〔 Both subspecies are known to hybridize with other ''Dubautia''.〔Young, A. G. and D. Boshier. (2000). (Forest conservation genetics: principles and practice, Volume 1. ) Csiro. page 173.〕 ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Dubautia imbricata」の詳細全文を読む スポンサード リンク
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