Callandrium Callistophytoides, Gen. et sp. nov., The Probable Pollen- Bearing Organ of the Seed Fern, Callistophyton
- 1 April 1970
- journal article
- Published by Wiley in American Journal of Botany
- Vol. 57 (4) , 394-403
- https://doi.org/10.2307/2440867
Abstract
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