Gray Treefrog (Hyla versicolor: Hylidae) 3.2-5.1 cm (record 6.0 cm) [1.25-2.00 in (record 2.36 in)] long, snout to vent. Houston Arboretum Houston Arboretum, Memorial Park, Houston, Harris County, Texas, USA. Lowland pine/yaupon forest with patches of bottomland hardwood forest at ca. 4 m (13 ft) elevation.