Complex sentence: In America the genus "Viscum" does not grow wild but the Eastern Mistletoe (in the genus "Phoradendron") is similar, but has shorter, broader leaves and longer clusters of 10 or more berries.
Split into simpler sentences: In America the genus "Viscum" does not grow wild. The Eastern Mistletoe (in the genus "Phoradendron") is similar, but has shorter, broader leaves and longer clusters of 10 or more berries.