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Bougainvillia britannica : ウィキペディア英語版 | Bougainvillia britannica
''Bougainvillia britannica'' is a marine invertebrate, a species of hydroid in the suborder Anthomedusae. ==Description== The polyp grows singly from a stolon or has a few branches. It has long pedicels and medusa buds develop in clusters on branched stalks. The young medusae have very narrow subumbrellas. The medusa has thick jelly and no peduncle. The four oral tentacles are long and branch four or five times as the medusa grows, and the oval ocelli are situated on the base of the tentacles. There are four bulbs on the margin of the umbrella with 12 to 17 tentacles on each bulb.〔
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「Bougainvillia britannica」の詳細全文を読む
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