The =stem= is nearly cylindrical, or tapering evenly from the base, when young more or less hairy, becoming smooth.
The pileus thin and fleshy, entirely dry, at first clothed with silky down, becoming smooth in mature plants.
The stem when young is adpressedly squamulose below, when full grown mealy, becoming smooth.
Color= dingy or reddish sulphur-yellow, at first silky, becoming smooth or minutely tomentose.
Pileus dry, not hygrophanous or viscid, covered at first with innate silky scales or fibrils, becoming smooth.
Twigs greenish or reddish, becoming smooth, dark green; thin, dark red-brown and shallowly fissured on the trunk.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "becoming smooth" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.