The typical roses you might find in your backyard probably have thorns, a vascular system and a red flower. A vascular system being a tube system that contains some of the ingredients the plant needs for its sugars. An example of a rose without a red bud is the Graham Thomas. It has a yellow flower and grows from 5-10 feet.
The parts of the rose are important. The "union" is where all the roots meet/intersect. A sucker is a shoot that comes from a root. Suckers should be removed if the rose was budded. The taproot transports the nutrients the plant needs all across the plant. Leaves and new shoots and leaves are made at the node. And the primary stem makes the outer shell of the plant. Roses would/are a very pretty contribution to your garden.