Bushes
Blackberry brambles and poison oak line many of the trails.
Poison oak.
Cow parsnip (Heracleum maximum) plants, sometimes growing six feet tall or more, are frequent along the trail.  With proper identification and preparation, parts of the plant can be eaten.  Cow parsnip is widely distributed in the United States.
Four species of rose grow in the Point Reyes National Seashore.  This appears to be wood rose (Rosa gymnocarpa).  The solitary small, simple bloom with the light coming through really caught my eye.
Thimbleberry (Rubus parviflorus).
Vetches (genus Vicia) are in the pea family Fabaceae.  Seven species of vetch grow in the park, four of which are non-native.
California manroot (Marah fabacea).