Publication: Fl. Amer. Sept. 1: 245.
selected vouchers: WTU
Notes: FNA26: "wo forms of Trillium ovatum should be noted. Forma hibbersonii T. M. C. Taylor & Szczawinski, a dwarf, grows on sea cliffs on Vancouver Island, British Columbia. Plants range from 3 to 10 cm tall, with all parts proportionally diminished, and petals opening clear pink, fading to white. T. M. C. Taylor and A. F. Szczawinski (1974) stated that this form occurs occasionally throughout the range of the species. "