Canyon tree frogs grow to  in length, and are typically brown, grey-brown, or grey-green in color, often with darker-colored blotching.
kˈænɪən tɹˈiː fɹˈɑːɡz ɡɹˈoʊ tʊ ɪn lˈɛŋθ, ænd ɑːɹ tˈɪpɪkli bɹˈaʊn, ɡɹˈeɪbɹˈaʊn, ɔːɹ ɡɹˈeɪɡɹˈiːn ɪn kˈʌlɚ, ˈɔfən wɪð dˈɑːɹkɚkˈʌlɚd blˈɑːtʃɪŋ.