lucky place
蓂 is a rare kanji associated with a lucky or auspicious place. Its meaning is narrow and not widely used in modern Japanese.
蓂 combines the grass radical 艹 with 冥, which likely contributes sound and possibly a sense of dark or hidden. The exact historical development is uncertain.
Picture a hidden grassy place (艹) under a dark, mysterious cover (冥) that brings luck to those who find it.
For ベイ, imagine finding a lucky bay (ベイ) hidden in the grass: bay -> ベイ, and the lucky place is right there.
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