poplar leaves. seamless pattern. endless ornament of multi-colored leaves. cartoon style

poplar autumn leaves seamless pattern foliage endless vein gathering mascot thanksgiving invitation falling stem ornament outline emblem seasonal gold decorate eternal repetitive drawing vegetation stick botanical stalk isolated shape repeated leafage autumnal cartoon set collection verdure design vector leaf willow yellow flora green nature herbarium plant background brown tree forest leaves pattern multi-colored style veins colorless background style family idea web