On Eastern Long Island the plants are in open grassy and shrubby areas along the edge of sandy trails, roads and powerlines as well as stabilized dunes of red cedar near the coast. In New York City and Westchester County they are in partial sun on low cliffs of metamorphic rock and on rocky ridges under oak forest. In the Taconic Mountains the plants are on southwest-facing slopes of ridges in chestnut oak forest with schist and granite ledges, rocky outcrops, and talus. They are growing in grassy openings and scattered around on rock outcrops (NYNHP 2011). Occurs in rocky, usually calcareous woods (Gleason and Conquist 1991). Dry sandy, gravelly or rocky woods and openings (Fernald 1950).

Appalachian oak-hickory forest A hardwood forest that occurs on well-drained sites, usually on ridgetops, upper slopes, or south- and west-facing slopes. The soils are usually loams or sandy loams. This is a broadly defined forest community with several regional and edaphic variants. The dominant trees include red oak, white oak, and/or black oak. Mixed with the oaks, usually at lower densities, are pignut, shagbark, and/or sweet pignut hickory. Cliff community A community that occurs on vertical exposures of resistant, non-calcareous bedrock (such as quartzite, sandstone, or schist) or consolidated material; these cliffs often include ledges and small areas of talus. Maritime grassland A grassland community that occurs on rolling outwash plains of the glaciated portion of the Atlantic coastal plain, near the ocean and within the influence of offshore winds and salt spray. Maritime red cedar forest A conifer forest that occurs on dry sites near the ocean. Eastern red cedar is the dominant tree, often forming nearly pure stands. Other characteristic trees include post oak and black cherry.

Pitch pine-oak forest A mixed forest that typically occurs on well-drained, sandy soils of glacial outwash plains or moraines; it also occurs on thin, rocky soils of ridgetops. The dominant trees are pitch pine mixed with one or more of the following oaks: scarlet oak, white oak, red oak, or black oak. Pitch pine-oak-heath rocky summit A community that occurs on warm, dry, rocky ridgetops and summits where the bedrock is non-calcareous (such as quartzite, sandstone, or schist), and the soils are more or less acidic. This community is broadly defined and includes examples that may lack pines and are dominated by scrub oak and/or heath shrubs apparently related to fire regime. Pitch pine-oak-heath woodland A pine barrens community that occurs on well-drained, infertile, sandy soils. The structure of this community is intermediate between a shrub-savanna and a woodland. Pitch pine and white oak are the most abundant trees. Pitch pine-scrub oak barrens A shrub-savanna community that occurs on well-drained, sandy soils that have developed on sand dunes, glacial till, and outwash plains.

Nantucket Shadbush (Amelanchier nantucketensis) Pennsylvania Sedge (Carex pensylvanica) Pink Lady's-slipper (Cypripedium acaule) Wild Ipecac (Euphorbia ipecacuanhae) Longbranch Frostweed (Helianthemum canadense) Red Cedar (Juniperus virginiana) (Lechea)

Canada Toadflax (Nuttallanthus canadensis) Switchgrass (Panicum virgatum) Scrub Oak (Quercus ilicifolia) Black Oak (Quercus velutina) Northern Dewberry (Rubus flagellaris) Little Bluestem (Schizachyrium scoparium) Virginia Tephrosia (Tephrosia virginiana)