蝦夷方言藻汐草

Onumaka follows the recorded ヲヌマカ. Onumanka adds an unrecorded nasal; Fukasawa explicitly leaves that form unconfirmed. Onuman “evening” is attested, but leaves final カ unexplained. One onuman ka corpus example means “also in the evening” and does not establish a compound. Onuma ka tests division without identifying onuma. Japanese 夜前 normally means the previous night; ukuran fits that sense but is phonologically remote. The whole form and its relationship to the Japanese remain unresolved, with lower confidence and separate alternatives.