Oclemena E.L.Greene, is a small genus of North American flowering plants in the aster tribe within the (sunflower family). It is native to northeastern North America, found in wet or dry woodlands, and sometimes in clearings in the woods, or in acid bogs and peat. The finely woolly stem grows in a zig-zag fashion to a height 30–100 cm (1–3 ft). It may be red at its base. The lanceolate leaves are numerous, arranged in a spiral whorl around a single stem. They can be sharply toothed along the margin (as in O. acuminata) or smooth (as in O. nemoralis). The leaves contain sessile resin glands. \n*