L. Wallis

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Usually in rich deciduous forests, often on hillsides, ranging from upland beech-maple and hemlock-hardwoods to moist floodplain forests and streamside thickets, but also in oak forests and rarely under pine or in moist ground under other conifers (such as cedar-hemlock).

Plants of this species are not fully developed vegetatively at the time the bright yellow flowers are open; the arched or drooping aspect of the upper part of the stem helps to give the whole plant a somewhat wilted look. The leaves expand and the stem straightens considerably as the distinctive triangular fruit ripens.

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