Mountain berries
Smilax herbacea L. is most likely what you are looking at, or something within the same Smilax family. The berries hang from a single stem in a tight cluster resembling a dimpled golf ball. The berries begin as green clusters and ripen to a dark purple or black in the fall.
Border grass has purple berries. Another name for it is Liriope muscari. Keep the berries away from children and pets.
a mulberry tree would have berries that fall in late spring most of them would be purple but some pinkie, red.mulberry trees make a huge mess so try and clean up the berries as soon as possible because they seed and new mulberry tree's would grow and make an even bigger mess.mulberry's stain and that means more washing so if you have a mulberry tree like me i would recommend you rake all the berries to a side then you wouldn't tread on them or you could just watch were your treading and avoid them.
grapes hawthorn berries
purple leafs
ferns, berries, poison ivy's, apple trees, and more
Berries. Any kind of berries.
Deciduous trees fall in the Fall. The trees lose their color and lose their leaves. That's why there are many trees that are bare in the Fall.
Deciduous
It could be elderberries
It sounds like you may be describing a beautyberry shrub (Callicarpa spp.). Beautyberries feature clusters of small, vibrant purple berries that appear in late summer to early fall. They have simple, elliptical leaves and are commonly used in landscaping for their ornamental appeal.
The tree you are referring to is likely a holly tree. Holly trees have sharp pointed leaves and produce bright red berries in the fall and winter. They are commonly used as decorative plants during the holiday season.