Complex sentence: The violet-grey bolete, "Tylopilus plumbeoviolaceus", (found in eastern North America and Korea) is somewhat similar in appearance, but can be distinguished by a smoother stipe, less brownish colors, and a bitter taste.
Split into simpler sentences: The violet-grey bolete, "Tylopilus plumbeoviolaceus", is found in eastern North America and Korea. This species is somewhat similar in appearance, but can be distinguished by its smoother stipe, less brownish colors, and bitter taste.