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In this issue

Reconstruction of a Jurassic conifer

Sewardiodendron, a Jurassic conifer originally described in 1958 based only on vegetative shoots from Yorkshire, England, is reconstructed by Yao et al. with the addition of recently discovered seed cones and pollen cones from Henan, central China. (see p. 1289)

Lilac phylogeny

Kim and Jansen examine the origin and relationships of all native species of Syringa and numerous cultivated hybrids using DNA restriction site data from both the chloroplast and nuclear genomes. They identify four major groups of lilacs, which correspond to four genetically incompatible crossing groups. (see p. 1338)

The tortoise and the hare

Small et al. contrast the phylogenetic utility of sequence data from chloroplast noncoding regions with sequence data from a nuclear-encoded Adh gene in a gruop of five recently diverged tetraploid species of cotton (Gossypium). The Adh homoeologues yilded 25 informative characters from a 1.65-kb region vs. only four informative nucleoide substitutions from over 7 kb of the chloroplast genome. (see p. 1301)

New Late Cretaceous magnoliids

Crepet and Nixon describe two new fossil flowers of magnoliid affinity frmo the Late Cretaceous of New Jersey. Cronquistiflora and Detrusandra show character combinations not present in extant families and thus will be important in the ongoing discussion of early angiosperm evolution. (see p. 1273)

This Article Submit a response Alert me when this article is cited Alert me when eLetters are posted Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Search for Related Content