Rhododendron genus --- heath family

Pacific rhododendron (Rhododendron macrophyllum) -- in July -- Oregon coast, southern Oregon           red & pink    

great rhododendron (Rhododendron maximum) -- in April -- Pisgah National Forest, western North Carolina         white & cream   

western Labrador tea (Rhododenron columbianum) -- in july -- Yosemite National Park, CA          white & cream     

western azalea (Rhododendron occidentale) -- in July -- Azalea State Reserve, McKinleyville,  northern California              white & cream