wild grain
穭 centers on grain that grows without cultivation: wild grain, self-sown rice, or volunteer crops that appear on their own.
穭 combines 禾 (grain) with 魯, which likely contributes the sound. The exact historical development is uncertain, but the structure suggests a phono-semantic compound for a type of grain.
The grain radical 禾 beside the complex 魯 (which can suggest something rough or natural) gives the image of grain that grows wild without being planted.
For リョ, imagine wild grain growing beside a ryokan (旅館, りょかん) garden: the first syllable リョ of りょかん cues the reading while the grain appears untended.
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