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Further Studies in the Genus Dryopteris: The Origin of D. clintoniana, D. celsa and Related Taxa
American Journal of Botany
Vol. 49, No. 5 (May - Jun., 1962), pp. 497-503
Published by: Botanical Society of America, Inc.
Stable URL: http://www.jstor.org/stable/2439420
Page Count: 7
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Cytogenetic studies of 5 Dryopteris species, from North America, together with wild and synthesized hybrids between some of them, show that D. clintoniana and D. celsa are allohexaploid and allotetraploid respectively. Cytological and morphological evidence points to D. cristata and D. goldiana being parental to D. clintoniana, whilst D. goldiana and D. ludoviciana are parental to D. celsa. The taxon D. x australis is triploid and has been synthesized; it is the backcross between D. celsa and D. ludoviciana.
American Journal of Botany © 1962 Botanical Society of America, Inc.