Complex sentence: Adobe parsley ("Lomatium roseanum"), also known as adobe lomatium and rose-flowered desert-parsley, is a very rare plant of the Western U.S., known only from northwestern Nevada and southeastern Oregon, and which may also occur in northeastern California.
Split into simpler sentences: Adobe parsley ("Lomatium roseanum") also goes by the names of adobe lomatium and rose-flowered desert-parsley. It is a very rare plant of the Western U.S., known only from northwestern Nevada and southeastern Oregon, and which may also occur in northeastern California.