This image is from plant patent 1,000   
This patent shows a particular rose plant.
Turning Ideas Into
Patents
___ Plant Patents___
Whoever invents or discovers and asexually reproduces and distinct
and new variety of plant, including cultivated sport, mutants, hybrids,
and newly found seedlings, other than a tuber propagated plant or a
plant found in an uncultivated state, may obtain a plant patent
therefore, subject to the conditions and requirements of this title.

The provisions of this title relating to patents for inventions shall
apply to patents for plants, except as otherwise provided.

Asexually propagated plants are those that are reproduces by means
other than from seeds, such as by the rooting of cuttings, by layering,
budding, grafting, inarching, etc. Plants capable of sexual reproduction
are not excluded from consideration is they have also been asexually
reproduced.

With reference to tuber propagated plants, for which a plant patent
cannot be obtained, the term “tuber” is used in its narrow horticultural
sense as meaning a short, thickened portion of an underground
branch. Such plants covered by the term “tuber propagated” are the
Irish potato and the Jerusalem artichoke. This exception is made
because this group alone, among asexually reproduced plants, is
propagated by the same part of the plant that is sold as food. The term
“plant” has been interpreted to mean “plant” in the ordinary and
acceptable sense and not in the strict scientific sense and this excludes
bacterial.