A defining feature of angiosperms is double fertilization involving the female gametophyte central cell and formation of a nutrient-storing tissue called endosperm. The route for the evolutionary ...
Machine generated contents note: Preface; 1. Introduction to angiosperms; 2. The nature of the angiosperm fossil record; 3. The environmental context of early angiosperm evolution; 4. Stratigraphic ...
High-throughput sequencing is fundamentally altering traditional phylogenetic classifications. While the Angiosperm Phylogeny Group (APG) III system based on chloroplast sequences has opened up a new ...
ARGUABLY the world’s weirdest plant, Welwitschia mirabilis is a tangled mass of shredded, fraying leaves in the Namib desert. For a thousand years, perhaps more, it grows just two long leaves, which ...
The discovery of exceptionally well-preserved, tiny fossil seeds dating back to the Early Cretaceous corroborates that flowering plants were small opportunistic colonizers at that time, according to a ...
They are very tiny, but they are a key source of information when it comes to Earth's evolutionary history: pollen grains are usually no larger than 20 micrometers, or 0.02 millimeters. Using these ...
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