蝦夷方言藻汐草

Kayano’s simawtacup matches both the recorded シマ and the sixth-month heading. The companion transcription has シュマ and offers sumawtacup and simawtacup as alternatives. The selected simawtacup has direct dictionary support. Batchelor assigns Shimauta-chup to July. The sole corpus hit uses simawtacup for August: the radio PDF confirms that translation and attributes the word to Yamamoto Tasuke’s dictionary. This is lexical evidence with a different month alignment, and its stated etymology should not be transferred automatically to this source.