| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| CECY | Ceanothus cyaneus Eastw. | San Diego buckbrush | Rhamnaceae
|
| CEDE8 | Ceanothus decumbens S. Wats. | Ceanothus diversifolius | Rhamnaceae
|
| CEDED | Ceanothus dentatus Torr. & Gray var. dickeyi Fosberg | Ceanothus foliosus var. foliosus | Rhamnaceae
|
| CEDEF | Ceanothus dentatus Torr. & Gray var. floribundus (Hook.) Trel. | Ceanothus dentatus | Rhamnaceae
|
| CEDE | Ceanothus dentatus Torr. & Gray | sandscrub ceanothus | Rhamnaceae
|
| CEDI9 | Ceanothus divaricatus Nutt. | Ceanothus oliganthus | Rhamnaceae
|
| CEDIC | Ceanothus divergens Parry ssp. confusus (J.T. Howell) Abrams | Ceanothus confusus | Rhamnaceae
|
| CEDIO | Ceanothus divergens Parry ssp. occidentalis (McMinn) Abrams | Ceanothus prostratus | Rhamnaceae
|
| CEDI | Ceanothus divergens Parry | Calistoga ceanothus | Rhamnaceae
|
| CEDI2 | Ceanothus diversifolius Kellogg | pinemat | Rhamnaceae
|
| CEFEV | Ceanothus fendleri Gray var. venosus Trel. | Ceanothus fendleri | Rhamnaceae
|
| CEFEV2 | Ceanothus fendleri Gray var. viridis M.E. Jones | Ceanothus fendleri | Rhamnaceae
|
| CEFE | Ceanothus fendleri Gray | Fendler's ceanothus | Rhamnaceae
|
| CEFE2 | Ceanothus ferrisiae McMinn | Coyote ceanothus | Rhamnaceae
|
| CEFL4 | Ceanothus �flexilis Greene ex McMinn | flexible ceanothus | Rhamnaceae
|
| CEFOF3 | Ceanothus foliosus Parry var. foliosus | wavyleaf ceanothus | Rhamnaceae
|
| CEFOM | Ceanothus foliosus Parry var. medius McMinn | wavyleaf buckbrush | Rhamnaceae
|
| CEFOV | Ceanothus foliosus Parry var. vineatus McMinn | Vine Hill ceanothus | Rhamnaceae
|
| CEFO | Ceanothus foliosus Parry | wavyleaf ceanothus | Rhamnaceae
|
| CEFR | Ceanothus fresnensis Dudley ex Abrams | Fresno mat | Rhamnaceae
|
| CEGLE | Ceanothus gloriosus J.T. Howell var. exaltatus J.T. Howell | Point Reyes ceanothus | Rhamnaceae
|
| CEGLG3 | Ceanothus gloriosus J.T. Howell var. gloriosus | Point Reyes ceanothus | Rhamnaceae
|
| CEGLP | Ceanothus gloriosus J.T. Howell var. porrectus J.T. Howell | Mt. Vision ceanothus | Rhamnaceae
|
| CEGL | Ceanothus gloriosus J.T. Howell | Point Reyes ceanothus | Rhamnaceae
|
| CEGRP2 | Ceanothus greggii Gray ssp. perplexans (Trel.) Beauchamp | Ceanothus greggii var. perplexans | Rhamnaceae
|
| CEGRV2 | Ceanothus greggii Gray ssp. vestitus (Greene) Thorne | Ceanothus greggii var. vestitus | Rhamnaceae
|
| CEGRF | Ceanothus greggii Gray var. franklinii Welsh | desert ceanothus | Rhamnaceae
|
| CEGRG2 | Ceanothus greggii Gray var. greggii | desert ceanothus | Rhamnaceae
|
| CEGRO | Ceanothus greggii Gray var. orbiculatus E.H. Kelso | Ceanothus greggii var. greggii | Rhamnaceae
|
| CEGRP | Ceanothus greggii Gray var. perplexans (Trel.) Jepson | desert ceanothus | Rhamnaceae
|
| CEGRV | Ceanothus greggii Gray var. vestitus (Greene) McMinn | Mojave ceanothus | Rhamnaceae
|
| CEGR | Ceanothus greggii Gray | desert ceanothus | Rhamnaceae
|
| CEGRH | Ceanothus griseus (Trel. ex B.L. Robins.) McMinn var. horizontalis McMinn | Ceanothus griseus | Rhamnaceae
|
| CEGR2 | Ceanothus griseus (Trel. ex B.L. Robins.) McMinn | Carmel ceanothus | Rhamnaceae
|
| CEHE2 | Ceanothus hearstiorum Hoover & J.B. Roof | Hearst Ranch buckbrush | Rhamnaceae
|
| CEHEP | Ceanothus herbaceus Raf. var. pubescens (Torr. & Gray ex S. Wats.) Shinners | Ceanothus herbaceus | Rhamnaceae
|
| CEHE | Ceanothus herbaceus Raf. | Jersey tea | Rhamnaceae
|
| CEHI | Ceanothus hirsutus Nutt. | Ceanothus oliganthus | Rhamnaceae
|
| CEHU2 | Ceanothus �humboldtensis Roof | Ceanothus pumilus | Rhamnaceae
|
| CEIMI | Ceanothus impressus Trel. var. impressus | Santa Barbara ceanothus | Rhamnaceae
|
| CEIMN | Ceanothus impressus Trel. var. nipomensis McMinn | Santa Barbara ceanothus | Rhamnaceae
|
| CEIM | Ceanothus impressus Trel. | Santa Barbara ceanothus | Rhamnaceae
|
| CEIN | Ceanothus incanus Torr. & Gray | coast whitethorn | Rhamnaceae
|
| CEIN9 | Ceanothus insularis Eastw. | Ceanothus megacarpus var. insularis | Rhamnaceae
|
| CEINC | Ceanothus integerrimus Hook. & Arn. var. californicus (Kellogg) G.T. Benson | Ceanothus integerrimus | Rhamnaceae
|
| CEINM | Ceanothus integerrimus Hook. & Arn. var. macrothyrsus (Torr.) G.T. Benson | Ceanothus integerrimus | Rhamnaceae
|
| CEINP | Ceanothus integerrimus Hook. & Arn. var. puberulus (Greene) Abrams | Ceanothus integerrimus | Rhamnaceae
|
| CEIN3 | Ceanothus integerrimus Hook. & Arn. | deerbrush | Rhamnaceae
|
| CEIN11 | Ceanothus intermedius Pursh | Ceanothus americanus | Rhamnaceae
|
| CEIN8 | Ceanothus intricatus Parry | Ceanothus sorediatus | Rhamnaceae
|
| CEJEA | Ceanothus jepsonii Greene var. albiflorus J.T. Howell | Jepson ceanothus | Rhamnaceae
|
| CEJEJ2 | Ceanothus jepsonii Greene var. jepsonii | Jepson ceanothus | Rhamnaceae
|
| CEJEP | Ceanothus jepsonii Greene var. purpureus (Jepson) Jepson | Ceanothus purpureus | Rhamnaceae
|
| CEJE | Ceanothus jepsonii Greene | Jepson ceanothus | Rhamnaceae
|
| CELE | Ceanothus lemmonii Parry | Lemmon's ceanothus | Rhamnaceae
|
| CELE2 | Ceanothus leucodermis Greene | chaparral whitethorn | Rhamnaceae
|
| CELO | Ceanothus �lobbianus Hook. (pro sp.) | | Rhamnaceae
|
| CELO2 | Ceanothus �lorenzenii (Jepson) McMinn | | Rhamnaceae
|
| CEMA | Ceanothus maritimus Hoover | maritime ceanothus | Rhamnaceae
|
| CEMA2 | Ceanothus martinii M.E. Jones | Martin's ceanothus | Rhamnaceae
|
| CEMA3 | Ceanothus masonii McMinn | Mason's ceanothus | Rhamnaceae
|
| CEMEI | Ceanothus megacarpus Nutt. ssp. insularis (Eastw.) Raven | Ceanothus megacarpus var. insularis | Rhamnaceae
|
| CEMEI2 | Ceanothus megacarpus Nutt. var. insularis (Eastw.) Munz | island ceanothus | Rhamnaceae
|
| CEMEM2 | Ceanothus megacarpus Nutt. var. megacarpus | bigpod ceanothus | Rhamnaceae
|
| CEMEP | Ceanothus megacarpus Nutt. var. pendulus McMinn | Ceanothus megacarpus var. megacarpus | Rhamnaceae
|
| CEME | Ceanothus megacarpus Nutt. | bigpod ceanothus | Rhamnaceae
|
| CEME3 | Ceanothus �mendocinensis McMinn | Mendocino ceanothus | Rhamnaceae
|
| CEMI4 | Ceanothus microphyllus Michx. | littleleaf buckbrush | Rhamnaceae
|
| CEOLS | Ceanothus oliganthus Nutt. ssp. sorediatus (Hook. & Arn.) C. Schmidt | Ceanothus sorediatus | Rhamnaceae
|
| CEOLO | Ceanothus oliganthus Nutt. var. orcuttii (Parry) Jepson | Ceanothus oliganthus | Rhamnaceae
|
| CEOLS2 | Ceanothus oliganthus Nutt. var. sorediatus (Hook. & Arn.) Hoover | Ceanothus sorediatus | Rhamnaceae
|
| CEOL | Ceanothus oliganthus Nutt. | hairy ceanothus | Rhamnaceae
|
| CEOP | Ceanothus ophiochilus Boyd, Ross & Arnseth | Vail Lake ceanothus | Rhamnaceae
|
| CEOR4 | Ceanothus orcuttii Parry | Ceanothus oliganthus | Rhamnaceae
|
| CEOR3 | Ceanothus oreganus Nutt. | Ceanothus sanguineus | Rhamnaceae
|
| CEOT | Ceanothus �otayensis McMinn | | Rhamnaceae
|
| CEOVP | Ceanothus ovatus Desf. var. pubescens Torr. & Gray ex S. Wats. | Ceanothus herbaceus | Rhamnaceae
|
| CEOV | Ceanothus ovatus auct. non Desf. | Ceanothus herbaceus | Rhamnaceae
|
| CEPA | Ceanothus palmeri Trel. | Palmer ceanothus | Rhamnaceae
|
| CEPAR3 | Ceanothus papillosus Torr. & Gray ssp. regius Jepson | Ceanothus papillosus var. papillosus | Rhamnaceae
|
| CEPAP3 | Ceanothus papillosus Torr. & Gray var. papillosus | wartleaf ceanothus | Rhamnaceae
|
| CEPAR | Ceanothus papillosus Torr. & Gray var. roweanus McMinn | wartleaf ceanothus | Rhamnaceae
|
| CEPA2 | Ceanothus papillosus Torr. & Gray | wartleaf ceanothus | Rhamnaceae
|
| CEPA3 | Ceanothus parryi Trel. | Parry ceanothus | Rhamnaceae
|
| CEPA4 | Ceanothus parvifolius (S. Wats.) Trel. | littleleaf ceanothus | Rhamnaceae
|
| CEPE6 | Ceanothus perplexans Trel. | Ceanothus greggii var. perplexans | Rhamnaceae
|
| CEPI | Ceanothus pinetorum Coville | Coville ceanothus | Rhamnaceae
|
| CEPRG | Ceanothus prostratus Benth. var. grandiflorus (Torr.) Jepson | Ceanothus gloriosus var. gloriosus | Rhamnaceae
|
| CEPRL | Ceanothus prostratus Benth. var. laxus Jepson | Ceanothus prostratus | Rhamnaceae
|
| CEPRO | Ceanothus prostratus Benth. var. occidentalis McMinn | Ceanothus prostratus | Rhamnaceae
|
| CEPR | Ceanothus prostratus Benth. | prostrate ceanothus | Rhamnaceae
|
| CEPU7 | Ceanothus pubescens (Torr. & Gray ex S. Wats.) Rydb. ex Small | Ceanothus herbaceus | Rhamnaceae
|
| CEPU | Ceanothus pumilus Greene | dwarf ceanothus | Rhamnaceae
|
| CEPU2 | Ceanothus purpureus Jepson | hollyleaf ceanothus | Rhamnaceae
|
| CERAF | Ceanothus ramulosus (Greene) McMinn var. fascicularis McMinn | Ceanothus cuneatus var. fascicularis | Rhamnaceae
|
| CERA | Ceanothus ramulosus (Greene) McMinn | Ceanothus cuneatus var. cuneatus | Rhamnaceae
|
| CERE | Ceanothus �regius (Jepson) McMinn | Ceanothus papillosus var. papillosus | Rhamnaceae
|
| CERIA | Ceanothus rigidus Nutt. var. albus J.B. Roof | Ceanothus cuneatus var. rigidus | Rhamnaceae
|
| CERIG | Ceanothus rigidus Nutt. var. grandiflorus Torr. | Ceanothus gloriosus var. gloriosus | Rhamnaceae
|
| CERI | Ceanothus rigidus Nutt. | Ceanothus cuneatus var. rigidus | Rhamnaceae
|
| CERO4 | Ceanothus roderickii Knight | Pine Hill buckbrush | Rhamnaceae
|