The Wellingtonia Gigantea is the tallest species known, and the Araucaria Excelsa (Norfolk Island Pine), perhaps, the next.
In the Crystal Palace at Sydenham is a most wonderful and gigantic specimen of the Wellingtonia Gigantea (fig.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "gigantea" in a variety of sentences. We hope that you will now be able to make sentences using this word.