Aussie Algae
Home Search ◊ Search by name/locality ◊ Search specific sites Reproductive          Structures ◊ Life Cycle ◊ Spores/Sporangia ◊ Gametes/Spermatia/       Carpogonial branches ◊ Cystocarps Harvey's Algal Exsiccatae ◊ Search images from       Phycologia Australica ◊ Australian Exsiccatae ◊ Friendly Is. Exsiccatae ◊ Ceylon Exsiccatae Phycologists ◊ Dr Alan Millar ◊ Dr Nick Yee ◊ Yola Metti ◊ Julie Taylor Links ◊ Australian       Freshwater Algae ◊ Algaebase ◊ Index Nominum       Algarum (INA) ◊ Seaweed Africa ◊ Phycologia Australica ◊ Real Dirt	Gametes/Spermatia/Carpogonial branches       Unlike spores, gametes are not ‘free living’. In other words, they need to be fertilised before they can continue to grow and survive. Male gametes of red algae are known as spermatangia and in this picture of Dasya roslyniae, they are seen forming collars or ‘corn cobs‘ on lateral branches. These spermatangia will be released into the water column and evetually find and fertilise a carpogonial branch.   Carpogonial branches are the female ‘gametangium‘ of red algae. They are often very thin hair-lke cells with a bulbous base and a twisted upper part. In this picture of Naccaria naccarioides, you can see the straight tip and curly base of the trichogyne. A complete carpogonial branch can be seen in the red algal life cycle page. Compiled and edited by staff of the National Herbarium of New South Wales © 1999 - 2011 The Royal Botanic Gardens & Domain Trust, Sydney Australia
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