| Canada | | | Flora of North America Editorial Committee, e. | 1993 | Pteridophytes and Gymnosperms | Fl. N. Amer. | 2: i–xvi, 1–475 |
| Canada | Alberta | | Flora of North America Editorial Committee, e. | 1993 | Pteridophytes and Gymnosperms | Fl. N. Amer. | 2: i–xvi, 1–475 |
| Canada | British Columbia | | Flora of North America Editorial Committee, e. | 1993 | Pteridophytes and Gymnosperms | Fl. N. Amer. | 2: i–xvi, 1–475 |
| United States | | | Flora of North America Editorial Committee, e. | 1993 | Pteridophytes and Gymnosperms | Fl. N. Amer. | 2: i–xvi, 1–475 |
| United States | Arizona | | Flora of North America Editorial Committee, e. | 1993 | Pteridophytes and Gymnosperms | Fl. N. Amer. | 2: i–xvi, 1–475 |
| United States | Colorado | | Flora of North America Editorial Committee, e. | 1993 | Pteridophytes and Gymnosperms | Fl. N. Amer. | 2: i–xvi, 1–475 |
| United States | Idaho | | Flora of North America Editorial Committee, e. | 1993 | Pteridophytes and Gymnosperms | Fl. N. Amer. | 2: i–xvi, 1–475 |
| United States | Montana | | Flora of North America Editorial Committee, e. | 1993 | Pteridophytes and Gymnosperms | Fl. N. Amer. | 2: i–xvi, 1–475 |
| United States | New Mexico | | Flora of North America Editorial Committee, e. | 1993 | Pteridophytes and Gymnosperms | Fl. N. Amer. | 2: i–xvi, 1–475 |
| United States | Utah | | Flora of North America Editorial Committee, e. | 1993 | Pteridophytes and Gymnosperms | Fl. N. Amer. | 2: i–xvi, 1–475 |
| United States | Washington | | Flora of North America Editorial Committee, e. | 1993 | Pteridophytes and Gymnosperms | Fl. N. Amer. | 2: i–xvi, 1–475 |
| United States | Wyoming | | Flora of North America Editorial Committee, e. | 1993 | Pteridophytes and Gymnosperms | Fl. N. Amer. | 2: i–xvi, 1–475 |