Gnetales
National Institutes of Health
Papers overview
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The exact phylogenetic position of Gnetales, a small, highly modified group of gymnosperms with an accelerated rate of molecular…
Over the past 25 years the discovery and study of Cretaceous plant mesofossils has yielded diverse and exquisitely preserved…
Flowers consist primarily of four basic organ types whose relative positions are universally conserved within the angiosperms. A…
Genomic comparisons provide evidence for ancient genome-wide duplications in a diverse array of animals and plants. We developed…
BACKGROUND AND AIMS
The extant species of the seed plant group Gnetales (Ephedra, Gnetum and Welwitschia) have been considered a…
Efforts to resolve Darwin's "abominable mystery"-the origin of angiosperms-have led to the conclusion that Gnetales and various…
Phylogenetic relationships among the five groups of extant seed plants are presently quite unclear. For example, morphological…
Angiosperms have dominated the Earth's vegetation since the mid-Cretaceous (90 million years ago), providing much of our food…
We present the results of two exploratory parsimony analyses of DNA sequences from 475 and 499 species of seed plants…