Here are some resources you can use to find get help with identifications of
plants or animals you have observed.
All Organisms (Plants, Animals, Fungi)
iNaturalist Site for posting observations from around the world,
and for getting help with identifications of plants and animals you have observed.
iSpot Nature
A friendly and free community helping to identify wildlife and share nature.
Especially strong European coverage.
California Plants
The California Native Plant Society (CNPS) has
many local chapters whose volunteers may be able to help you identify
a plant you found growing in the wild.