Sometimes taxonomists create new names for groups that already have a name. They may do this because they are unaware of the original name, or they may think the organism before them belongs to a different group when in fact it does not. If two or more names are found to apply to the same group, they are considered synonyms. In most cases, the first name takes priority and is considered to be the valid or accepted name. However, there can be exceptions, and it's not always easy to determine which of a series of synonyms should be considered valid or accepted. Here we list the synonyms provided to EOL by our classification partners. We also include other versions of the name that most likely refer to the same group, for example, misspellings in the literature or different variations of the authorship associated with the name.

Preferred marks the preferred name from each source.

NCBI Taxonomy

Name Relationship
ceanothus Preferred
Ceanothus L. Authority


Name Relationship
Ceanothus Linnaeus, 1753 Preferred
Ceanothus subsericeus Rydb. Synonym
Ceanothus andersonii Parry
Ceanothus orcuttii Parry
Ceanothus perplexans Trel.
Ceanothus hirsutus Nutt.
Ceanothus ramulosus (Greene) McMinn
Ceanothus decumbens S. Wats.
Ceanothus californicus Kellogg
Ceanothus infesta Humboldt, Bonpland and Kunth
Ceanothus austromontanus Abrams
Ceanothus oreganus Nutt.
Ceanothus vestitus Greene
Ceanothus intermedius Pursh
Ceanothus pubescens (Torr. & Gray ex S. Wats.) Rydb. ex Small
Ceanothus divaricatus Nutt.
Ceanothus regius (Jepson) McMinn
Ceanothus humboldtensis Roof
Ceanothus intricatus Parry
Ceanothus ovatus auct. non Desf.
Ceanothus rigidus Nutt.
Ceanothus insularis Eastw.


EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!