All the trees within this group are cone-bearing of some sort; they are all Gymnosperms, rather than Angiosperms, the flowering trees.
This page will cover anything that is not a Pine, a Cedar, a Cypress or a Yew which all have their own separate pages.
First up is a Dawn redwood, Metasequoia glyptostroboides. It’s tree number 25 in the park system. It’s a deciduous conifer and the picture taken in February shows it in marked contrast to the Austrian pine, right next to it.
Next, another Dawn redwood. This one is down by the pond. Walking away from the white house, take the left hand path and this tree is close to the guard rail about half way down the path, near a bench.