| 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 intergerrimum | Bůžek (1971), Pl. 37, fig. 1 | | | ČB95 | Acer intergerrimum | Bůžek (1971), Pl. 38, fig. 7 | | | ČB99 | Acer intergerrimum | Bůžek (1971), Pl. 37, fig. 6 | | | ČB97 | Acer intergerrimum | Bůžek (1971), Pl. 38, fig. 6 | | | ČB94 | Acer intergerrimum | Bůžek (1971), Pl. 38, fig. 10 | | | ČB100 | Acer intergerrimum | Bůžek (1971), Pl. 37, fig. 5 | | | ČB90 | Acer intergerrimum | Bůžek (1971), Pl. 37, fig. 7 | | | ČB17 | Acer intergerrimum | Bůžek (1971), Pl. 37, fig. 4, Pl. 27, fig. 4, Pl. 32, fig. 2 | | | ČB16 | Acer intergerrimum | Bůžek (1971), Pl. 38, fig. 5 | | | ČB96 | Acer palacosaccharinum | Kvaček a Walther (2004), text. fig. 5, 7 | | | MP43 | Acer palaeosaccharinum | Bůžek, Holý, Kvaček (1976) Pl. XI, fig. 4 | | | ČB662 | Acer palaeosaccharinum | Kvaček a Walther (2004) Pl. 1, fig. 1; text. fig. 5. 6 | | | MP42 | Acer | | | | EK373 | Acer | | | | EK389 | Acer | | | | EK372 | Acer | | | | EK278 | Acer | Bubík, Kvaček | | | MB11 | Acer tricuspidatum | Bů?ek, Holý, Kvaček (1976) Pl XI, fig. 7 | | | ČB648 | Acer tricuspidatum | Bůžek, Holý, Kvaček (1976) Pl. XI, fig. 5 | | | ČB667 | Acer tricuspidatum | Bůžek, Holý, Kvaček (1976) Pl XI, fig. 8 | | | ČB649 |
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