Canada | | | Flora of North America Editorial Committee | 1993 | Pteridophytes and Gymnosperms | Fl. N. Amer. | 2: i–xvi, 1–475 |
Canada | British Columbia | | Flora of North America Editorial Committee | 1993 | Pteridophytes and Gymnosperms | Fl. N. Amer. | 2: i–xvi, 1–475 |
United States | | | Flora of North America Editorial Committee | 1993 | Pteridophytes and Gymnosperms | Fl. N. Amer. | 2: i–xvi, 1–475 |
United States | Alaska | | Flora of North America Editorial Committee | 1993 | Pteridophytes and Gymnosperms | Fl. N. Amer. | 2: i–xvi, 1–475 |
United States | California | | Flora of North America Editorial Committee | 1993 | Pteridophytes and Gymnosperms | Fl. N. Amer. | 2: i–xvi, 1–475 |
United States | Idaho | | Flora of North America Editorial Committee | 1993 | Pteridophytes and Gymnosperms | Fl. N. Amer. | 2: i–xvi, 1–475 |
United States | Oregon | | Flora of North America Editorial Committee | 1993 | Pteridophytes and Gymnosperms | Fl. N. Amer. | 2: i–xvi, 1–475 |