| Flowering plants
The flowering plants (angiosperms), also known as Angiospermae or Magnoliophyta, are the most diverse group of land plants. Angiosperms are seed-producing plants like the gymnosperms and can be distinguished from the gymnosperms by a series of synapomorphies (derived characteristics). These characteristics include flowers, endosperm within the seeds, and the production of fruits that contain the seeds.
The ancestors of flowering plants diverged from gymnosperms around 245–202 million years ago, and the first flowering plants known to exist are from 140 million years ago. They diversified enormously during the Lower Cretaceous and became widespread around 100 million years ago, but replaced conifers as the dominant trees only around 60–100 million years ago.
Source: http://en.wikipedia.org/wiki/Flowering_plant
Acer tricuspidatum | Bůžek (1971), Pl. 36, fig. 9 | | | ČB105 | Acer tricuspidatum | Bůžek (1971), Pl. 35, fig. 13 | | | ČB105 | Acer tricuspidatum | Bůžek (1971), Pl. 36, fig. 5, Pl. 39, fig. 4 | | | ČB15 | Acer tricuspidatum | Bůžek (1971), Pl. 36, fig. 8 | | | ČB18 | Acer tricuspidatum | Bůžek (1971), Pl. 35, fig. 9 | | | ČB103 | Acer tricuspidatum | Bůžek (1971), Pl. 36, fig. 4 | | | ČB23 | Acer tricuspidatum | Kvaček a Walther (2004), Pl. 1, fig. 9; text. fig. 3. 10 | | | MP40 | Acer tricuspidatum | Bůžek (1971), Pl. 36, fig. 2 | | | ČB101 | Acer tricuspidatum | Bůžek (1971), Pl. 35, fig. 14 | | | ČB87 | Acer tricuspidatum | Bůžek (1971), Pl. 36, fig. 10 | | | ČB27 | Acer tricuspidatum | Bůžek (1971), Pl. 36, fig. 7 | | | ČB30 | Acer tricuspidatum | Bůžek (1971), Pl. 36, fig. 11 | | | ČB26 | Acer tricuspidatum | Bůžek (1971), Pl. 38, fig. 2 | | | ČB104 | Acer tricuspidatum | Bůžek (1971), Pl. 36, fig. 1 | | | ČB110 | Acer tricuspidatum | Bůžek (1971), Pl. 36, fig. 6 | | | ČB102 | Acer trilobatum | | | | p2938 | Acer trilobatum | | | | p2658 | Acer trilobatum | | | | p4764 | Acer trilobatum | | | | p2941 | Acer trilobatum | | | | p2931 |
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