cycad

Listing 1 - 10 from 601 for cycad

The Cycad Pages
... database developed from The World List of Cycads, with a page for every known cycad. What are cycads? An introduction Botanical information and links, including Search for a name ... Fixation - a critical aspect of cycad ecology History - cycad evolution and the fossil record Geography and distribution - where cycads grow; why they are there Cycad Genomics - evolution of cycad form and function as ...
plantnet.rbgsyd.nsw.gov.au

The Cycad Pages
... two decades. Our first "World List" was published in Encephalartos, the Journal of the Cycad Society of South Africa (Osborne and Hendricks, 1985) with minor amendments in a supplementary ... the previous lists obsolete. These have been presented at the various International Conferences on Cycad Biology (Stevenson, Osborne and Hendricks, 1990; Stevenson and Osborne 1993A; Stevenson, Osborne and Hill, ...
plantnet.rbgsyd.nsw.gov.au

The Cycad Pages
... each genus has a restricted geographical range. The very large divided leaves means that cycad plants resemble palms or tree-ferns in overall appearance. Cycads, however, differ greatly in almost all aspects of detailed structure and reproductive behaviour. Cycad plants are dioecious (i.e. male and female reproductive structures are borne on separate ...
plantnet.rbgsyd.nsw.gov.au

The Cycad Pages
... pages. You can also search the World List of Cycads for any cycad name. Cycad classification The following detailed classification (from Stevenson 1992) aims to accurately ... Macrozamiinae Macrozamia Lepidozamia Zamioideae Ceratozamieae Ceratozamia Zamieae Microcycadinae Microcycas Zamiinae Zamia Chigua Cycad identification Try this experimental multiple-entry key based on the DELTA format. ...
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The Cycad Pages
... surface, affording protection against drought and the fires that are a frequent feature of many cycad habitats. Coralloid roots also present in all cycads host symbiotic cyanobacteria, which fix atmospheric ... are different in different parts of the world, and the IUCN Cycad Specialist Group is at the moment preparing a cycad action plan defining the different threats and proposing actions to counter ...
plantnet.rbgsyd.nsw.gov.au

The Cycad Pages
... Introduction Symbiosis What is symbiosis? Nature of the Cycad/Cyanobacteria Symbiosis Costs and Benefits of the Symbiosis Cycad Roots Normal root anatomy and morphology Coralloid root ... economy Physiology of nitrogen fixation Nitrogen fixation in the Cyanobacteria/Cycad symbiosis Assimilation of fixed nitrogen Colonization of Cycad Coralloid roots by Cyanobacteria Recognition between partners Mode ...
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The Cycad Pages
... often referred to as the 'Age of Cycads'. During this time, cycad-like plants, along with the conifers and Ginkgoales, dominated the vegetation ... 50-60 million years ago. There are also about 19 extinct cycad genera known only as fossils, all of these from the Paleozoic ... , and these present-day absences are not readily explained. The Cycad Pages The World List References and Links Home © 1998-2004 ...
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The Cycad Pages
The Cycad Pages The Cycad Pages Geography Cycads occur in tropical and subtropical parts of the world, in areas of moderate to high rainfall (shaded in red on the map). Select an area to see the genera and species growing there. The Cycad Pages The World List References and Links Home © 1998-2004 Royal Botanic Gardens Sydney Written and maintained by Ken Hill
plantnet.rbgsyd.nsw.gov.au

The Cycad Pages
... Climate is particularly a limiting factor in outdoors and in-ground plantings, largely restricting cycad use to subtropical and tropical regions. Container growing Media There is an enormous volume ... . larvae of many species of insects, especially moths butterflies and beetles can seriously damage cycad plants by attacking emerging fronds. This immediately renders the plants unattractive, and in the ...
plantnet.rbgsyd.nsw.gov.au

The Cycad Pages
... Cycad Pages The Cycad Pages Cycas macrocarpa Photo Ken Hill ETHNOBOTANY OF CYCADS Nadia ... through extended processing before any part can be safely eaten. Even so, cycad consumption has been implicated in a number of disease occurrences (read about ... here to look at uses in different regions and for different cycads The Cycad Pages The World List References and Links Home © 1998-2004 Royal Botanic ...
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