Dwarf-Flowered Heartleaf (Hexastylis naniflora) THREATENED Family: Birthwort Flowering/Fruiting Dates: Mid-March to earlyJune. Habitat: Acidic sandy loam soils along bluffs and nearby slopes, hillsides and ravines, in boggy areas adjacent to creekhcads and streams. Soil type is the most important habitat require- ment (Pacolet, Madison, or Musella types). Needs sunlight in early spring for maximum flowering and seed production. Distinguishing Characteristics: Smallest flowers of any North American Hexastylis; most are less that .4 inch long, with narrow sepal tubes (never more than .28 inch wide). ihejug-shaped flowers range from beige to dark brown, sometimes greenish or purplish. Leathery evergreen leaves are dark green and heart-shaped. Threats: Site conversion from woodlands to pasture, residential! industrial development, reservoir construction, herbicides.