Carole, I have better results when searching by plugging in LESS rather than more info. That will bring up usually a pretty short list and then you can pick which one makes the most sense for what you are looking for. In the above example, I just searched for 'redwood' and got this entry (among others):
Redwood (Sequoia sempervirens)
Or, if you are looking for Giant Sequoia, I searched 'giant sequ' because I can never remember the order of the ending, and got this entry (among others):
Giant Sequoia (Sequoiadendron giganteum)
I've never heard of a Giant Redwood, personally, which doesn't mean it doesn't exist. Hope this helps your search.