Virginia Spiraea (Spriraea virginiana) THREATENED Family: Rose Flowering/Fruiting Dates: June - July Habitat: Rocky flood-scoured riverbanks in gorges or canyons. Distinguishing Characters: Shrub, 2-10 feet tall with arching upright stems and cream- colored flowers; leaves are alternate and of different sizes and shapes; pecidels, lower leaf surfaces and floral cups are glaucous. Threats: Reservoir construction, severe flooding or inundation, highway & railroad maintenance and construction, dumping extensive clearing