BIOL10001 Lecture 10: BIOL10001 Lecture 10 Notes
20 Sep 2018
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Document Summary
Gondwanan group, occurring in south africa, india, south east asia, south america and australia. Long fossil record in the souther hemisphere including antarctica. Owers with a four lobed perianth. (tepals) four stamens often attached to the tepals one or two celled ovary. Greater than 800 in australia a centre for diversity. Forest, woodlands, heathlands on low nutrient soils, rainforests etc. Sclerophyll woody shrubs and trees with corky bark, often lignotubers. Old gondwanan family with fossil pollen 80 million years old. Style long acts are pollen presenter (male) receives pollen (female phase) Often have only a few ovaries developing as fruits. Fruit is a woody follicle that usually opens after re. Native species are often toxic but still used by aboriginals. Some a source of medicinal compounds or genetic traits. Green acacia seeds when roasted have an 18-25% protein content. Very small owers (in clusters, heads or spikes) Extra oral nectaries can also attract ants and ward o herbivorous insects.
