noun
Christmas cactus; crab cactus
A popular winter-flowering houseplant with flattened, claw-like stem segments. Often called クリスマスカクタス in Japanese as well.
冬になると、シャコバサボテンがきれいな花を咲かせます。
In winter, the Christmas cactus blooms with beautiful flowers.
母は毎年シャコバサボテンの鉢を増やしている。
My mother increases her pots of Christmas cactus every year.
From 蝦蛄葉 (shakoba, 'mantis-shrimp leaf', referring to the shape of the stem segments) + サボテン (saboten, 'cactus'). The kanji 蝦蛄 (shako) means mantis shrimp, whose body segments resemble the plant's flattened stems.