Ancient Trees in Houston
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The John Knox Live Oak
Southern Live Oak (Quercus virginiana). . Free. Church grounds, open. The tree stands on the front lawn, visible from Gessner Road.

The Old Pecan Tree
Pecan (Carya illinoinensis). . Free. Public hiking trail, open daylight hours.

The Kissing Tree
Southern Live Oak (Quercus virginiana). already the settlement's meeting tree in 1848. Free. Public access, on open ground behind a filling station.

The Spring Creek Winged Elm
Winged Elm (Ulmus alata). . Free. Public county greenway trail, open daylight hours.