Agaricus arvensis, horse mushroom-coarse edible mushroom with a hollow stem and a broad white cap. Agaricus campestris, field mushroom, meadow mushroom-common edible mushroom found naturally in moist open soil; the cultivated mushroom of commerce.garicus campestris, field mushroom, meadow mushroom-common edible mushroom found naturally in moist open soil; the cultivated mushroom of commerce.
Summer Fun on the River ... Regional Parks presents the Russian River Festival, 31 days of outdoor adventure on Sonoma County's summer playground. Throughout July, we will be sharing all the cool ways you can explore and enjoy the Russian River.
Russian River Cruises. Take a vacation of a lifetime as you travel down the rivers of Russia on a Russian cruise with us. Travel on the routes followed by the Russian Tsars, dock in ancient Russian cities that to this day, still conjure up Russia's mysterious past.