sentences:  Sugarloaf Ridge State Park’s forests consist of Douglas firs, big-leaf maple, madrone, coastal redwoods, California buckeye and alder trees as well as an abundance of oaks including live, laurel, and mixed oaks.Poison oak and stinging nettles are found along the Sonoma Creek and can be a threat to hikers.Shrubs of the chaparral include manzanita, chamise, California lilac, coyote bush, toyon, and winebush.