Dog tooth lilies
Erythroniums (Dog Tooth Lilies) just have to be one of the most perfect of plants for a woodland setting Producing nodding, lily-like blooms on slender stems in the spring, in fact they will flower well in any semi-shaded situation the bronze or mahogany patterns on their foliage herald the approaching season even before the flowers appear.The common name dog tooth is a reference to the shape of the bulbs.
Erythroniums will spread into large colonies where they will form a lovely naturalized ground cover before many other plants hit their early-season stride.
The hardiest variety is Pagoda, each flower stem carries several yellow flowers in late Spring. Look out for this one next Spring, best with pot grown plants.