Top of a Young Cottonwood Tree in the Sun.
Tags: arizona,cottonwood,fall color,leaves,pima county,rincon creek,rincon mountains,rincon valley,saguaro national park,sun dog

Fall Color 02.
Tags: alison,arizona,cochise county,cottonwood tree,fall color,leaves,san pedro riparian national conservation area,san pedro river,san pedro river valley,tucson field office,united states

Fall Color 01.
Tags: alison,arizona,cochise county,cottonwood tree,fall color,leaves,san pedro riparian national conservation area,san pedro river,san pedro river valley,tucson field office,united states

Fall Color 05.
Tags: arizona,cochise county,cottonwood tree,fall color,leaves,san pedro riparian national conservation area,san pedro river,san pedro river valley,tucson field office,united states

Fall Color 04.
Tags: alison,arizona,cochise county,cottonwood tree,fall color,leaves,san pedro riparian national conservation area,san pedro river,san pedro river valley,tucson field office,united states

Fall Color 03.
Tags: alison,arizona,cochise county,cottonwood tree,fall color,leaves,san pedro riparian national conservation area,san pedro river,san pedro river valley,tucson field office,united states

Scattered Leaves.
Tags: arizona,arizona state trust land,arizona trail,cottonwood,fall color,leaves,pima county,rincon creek,rincon mountains,rincon valley,state trust land,united states

Fallen Leaves.
Tags: arizona,leaves,pima county,rincon creek,rincon mountains,rincon valley,saguaro national park,united states

Night on the Parsons Trail.
Tags: arizona,coconino national forest,leaves,night,parsons trail,red rock ranger district,sycamore canyon,sycamore canyon wilderness,water,yavapai county

Running by Stone Mountain Lake.
Tags: charles,dekalb county,fall,georgia,leaves,running,stone mountain,stone mountain park

I believe this is Buffalo Gourd - Cucurbita foetidissima.
Tags: arizona,cochise county,gourd,leaves,san pedro,san pedro riparian national conservation area,san pedro river valley