banana
芭 centers on the banana plant, specifically its broad leaves or the plant itself.
芭 combines 艹 (plant) with 巴, which likely contributes the sound. It originally referred to a type of fragrant plant or the banana plant.
The plant radical 艹 sits above 巴, like a banana plant with broad leaves spreading out from a central stem.
For バ, imagine a banana with a big 'ba' sound when you peel it: ba -> バ, and the plant is a banana plant.
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Japanese fiber banana (Musa basjoo)
yellow skunk cabbage (Lysichiton americanum)
banana
traveller's tree (Ravenala madagascariensis); traveller's palm
Asian skunk cabbage (Lysichiton camtschatcense)
Ryo Hazuki
palm-leaf fan
Indo-Pacific sailfish (Istiophorus platypterus)