BIOL10001 Lecture 11: BIOL10001 Lecture 11 Notes
20 Sep 2018
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Dominate australian landscapes except for rainforest and the arid interior. Form tall forests in high rainfall areas, low foes and woodland in drier areas, ample scrubland in semiarid areas and subalpine forest and woodlands at higher altitudes. All habitats except rainforest, alpine and arid desert. Fossil record provides little evidence of their evolutionary history. Fossil eucalyptus like pollen recorded in australia for the rst time 56 million years ago. Fruit and ower fossils found in australia 30 million years ago. Some found in south america from 52 million years ago. They are an ancient group, extending in gondwana to south america and new zealand. Instead they develop one or two opercula (caps that enclose the stamens and style fo the ower) Three main types (according to dna) homologous to sepals or petals that have become continuous forming a ring meristem.
