The spores of Dryopteris clintoniana and its relatives

Abstract

The perispore morphology of two diploid species, Dryopteris goldiana (Hook.) A. Gray and D. ludoviciana (Kunze) Small; two allotetraploids, D. celsa (Palmer) Small and D. cristata (L.) A. Gray; and the allohexaploid D. clintoniana (D. C. Eaton) Dowell, was examined with the scanning electron microscope. The contributions of the individual genomes of each species as shown by the morphology of the perine were shown, and an attempt was made to extrapolate the contribution to perine phenotype of genome B from an unknown ancestral species B.