The flower can be made to look new by proper pplication of manure . this is done with the application of water. making sure that every old leaf on the plant is removed and placing the flower in a cool place. this i think will rejuvenate the flower.
If you can pick one, take it to a good nursery. Someone there will probably know. Otherwise, there are lots of books and web sites with pictures, but it's easier to find a picture if you have a name...
By going directing the water from the aquaduct to the pit so it waters the flower (In the garden of the sphinx) you can then pick it.The garden is the one with the giant bird, spider thing