with …
bark=striped ⫼ vertically white and green;  buds=thick and 8-10 mm (⅓-⅖ in) long;  conspicuously-stalked
⫼ 🍁︎ striped maple  Acer pensylvanicum

bark=not white-striped;     buds=​slender and 3-5 mm (⅛-⅕ in) long;  short-stalked
🗻︎ 🍁︎ mountain maple  Acer spicatum