Neviusia cliftonii  Neviusia cliftonii is a rare species of shrub in the rose family which is known by the common name Shasta snow-wreath. It is endemic to Shasta County, California, where it is known from about 25 occurrences in the mountains around Lake Shasta. The shrub was not known to science until 1992, when it was discovered east of Redding, California and described as a new species in "Neviusia", previously a monotypic genus. "Neviusia cliftonii" is an erect deciduous shrub reaching 2.5 meters in maximum height. The alternately arranged leaves are oval or heart shaped and lined with toothed lobes. The leaf blades reach 6 centimeters long and are borne on short petioles. The inflorescence is an umbel-like cluster of 3 to 5 flowers. The flower is a ball of about 50 long, whiskery white stamens each about half a centimeter long. There are rarely a single white petal basal to the stamens, although the petals are often absent. The fruit type is a soft-bodied achene a few millimeters long [anatomically the fruit is an achenetum]. When not in flower, the plant resembles common shrubs such as oceanspray and ninebark, one reason why it may have gone unrecognized for so long.