Pink Lady’s Slipper (Cypripedium acaule). Orchidaceae. September 18, 2019 1200 × 1200 NY Wildflowers Gallery Native. Acidic woodlands, often with pine. Throughout. Napeague, May 2019. Native. Acidic woodlands, often with pine. Throughout. This individual growing beneath pitch pines. Napeague, Long Island, May 2019.