Wagner, W.H. 1977: Systematic implications of the Psilotaceae. Brittonia 29: 54–63.
Provider Properties
Reference Properties
Provider
| Wagner, W.H. 1977: Systematic implications of the Psilotaceae. Brittonia 29: 54–63. |
| Wagner, W.H. 1977: Systematic implications of the Psilotaceae. Brittonia 29: 54–63. |