Assertion: elm's bark | /r/CapableOf | become blotchy
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text: Among other obvious differences, with age the Siberian elm's bark becomes deeply ridged and furrowed, and possesses a very rough, greyish-black appearance, while the Chinese elm's smooth bark becomes flaky and blotchy, exposing very distinctive, light-coloured mottling, hence the synonym lacebark elm for the real Chinese elm.