| 11. | Sometimes bacterial preparations may be used to control insect infestation on cycads.
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| 12. | Cycads are primitive plants that have existed for nearly 200 million years.
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| 13. | These exist in a symbiotic relationship with the cycad by nitrogen fixation.
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| 14. | Many populations now exist in suburban areas with ornamental cycads.
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| 15. | Initial laboratory results found low levels of free BMAA in cycad flour.
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| 16. | This cycad has a cylindrical trunk about 20 to 30 centimeters long.
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| 17. | Cycads formed the second largest group until about 120 Ma.
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| 18. | It is considered to be one of the most popular cultivated cycads.
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| 19. | On land, the local flora included conifers and cycads.
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| 20. | The Conservatory is home to many exotics including ferns, cycads and orchids.
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