noun
black mangrove (Bruguiera gymnorrhiza)
A mangrove species found in coastal areas of the Indo-Pacific, including southern Japan. The name is usually written in katakana.
沖縄のマングローブ林にはオヒルギが多く見られる。
Black mangroves are commonly seen in the mangrove forests of Okinawa.
The origin of the name is uncertain. The kanji 雄蛭木 literally means 'male leech tree', but this is likely an ateji (phonetic) assignment rather than a description of the plant.