You are not currently logged in.
Access JSTOR through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Phylogeny of Aspleniaceae Inferred from rbcL Nucleotide Sequences
Noriaki Murakami, Satoru Nogami, Mikio Watanabe and Kunio Iwatsuki
American Fern Journal
Vol. 89, No. 4 (Oct. - Dec., 1999), pp. 232-243
Published by: American Fern Society
Stable URL: http://www.jstor.org/stable/1547233
Page Count: 12
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
We determined rbcL sequences of 25 species and 2 varieties of Aspleniaceae with various leaf and rhizome morphologies, and conducted a phylogenetic analyses with the following conclusions: 1) leaf shape is not congruent with rbcL phylogeny in Aspleniaceae; 2) rhizome morphology (erect-ascending or creeping) reflects rbcL phylogeny; 3) naturally occurring hybrids are generated only between closely related species and thus reflect the rbcL phylogeny. The third conclusion was especially well-supported by our allozyme analyses of hypothesized hybrids between distantly related species of Aspleniaceae. A popular cultivated fern hybrid in Japan, Asplenium ×kenzoi, is believed to be a hybrid between A. prolongatum and A. wrightii, which are distantly related in our molecular tree. However, our allozyme analysis of A. ×kenzoi showed that it is a hybrid between A. antiquum and A. prolongatum, whose close relationship was first suggested by our rbcL tree. Thus, A. ×kenzoi appears to to be a hybrid between two closely related species with very different morphologies.
American Fern Journal © 1999 American Fern Society