• Ceanothus Linnaeus, 1753
• Ceanothus americanus Linnaeus
• Ceanothus andersonii Parry accepted as Ceanothus integerrimus Hook. & Arn.
• Ceanothus arboreus Greene
• Ceanothus arcuatus McMinn
• Ceanothus austromontanus Abrams accepted as Ceanothus foliosus Parry
• Ceanothus bakeri Greene ex C.F. Baker
• Ceanothus californicus Kellogg accepted as Ceanothus integerrimus Hook. & Arn.
• Ceanothus confusus J.T. Howell
• Ceanothus connivens Greene
• Ceanothus cordulatus Kellogg
• Ceanothus crassifolius Torr.
• Ceanothus cuneatus (Hook.) Nutt.
• Ceanothus cyaneus Eastw.
• Ceanothus decumbens S. Wats. accepted as Ceanothus diversifolius Kellogg
• Ceanothus dentatus Torr. & Gray
• Ceanothus divaricatus Nutt. accepted as Ceanothus oliganthus Nutt.
• Ceanothus divergens Parry
• Ceanothus diversifolius Kellogg
• Ceanothus fendleri Gray
• Ceanothus ferrisiae McMinn
• Ceanothus flexilis Greene ex McMinn
• Ceanothus foliosus Parry
• Ceanothus fresnensis Dudley ex Abrams
• Ceanothus gloriosus J.T. Howell
• Ceanothus greggii Gray
• Ceanothus griseus (Trel. ex B.L. Robins.) McMinn
• Ceanothus hearstiorum Hoover & J.B. Roof
• Ceanothus herbaceus Raf.
• Ceanothus hirsutus Nutt. accepted as Ceanothus oliganthus Nutt.
• Ceanothus humboldtensis Roof accepted as Ceanothus pumilus Greene
• Ceanothus impressus Trel.
• Ceanothus incanus Torr. & Gray
• Ceanothus infesta Humboldt, Bonpland & Kunth accepted as Adolphia infesta (Kunth) Meisn.
• Ceanothus insularis Eastw. accepted as Ceanothus megacarpus Nutt.
• Ceanothus integerrimus Hook. & Arn.
• Ceanothus intermedius Pursh accepted as Ceanothus americanus Linnaeus
• Ceanothus intricatus Parry accepted as Ceanothus sorediatus Hook. & Arn.
• Ceanothus jepsonii Greene
• Ceanothus lanceolatus
• Ceanothus lemmonii Parry
• Ceanothus leucodermis Greene
• Ceanothus lobbianus Hook.
• Ceanothus lorenzenii (Jepson) McMinn
• Ceanothus maritimus Hoover
• Ceanothus martinii M.E. Jones
• Ceanothus masonii McMinn
• Ceanothus megacarpus Nutt.
• Ceanothus mendocinensis McMinn
• Ceanothus microphyllus Michx.
• Ceanothus oliganthus Nutt.
• Ceanothus ophiochilus Boyd, Ross & Arnseth
• Ceanothus orcuttii Parry accepted as Ceanothus oliganthus Nutt.
• Ceanothus oreganus Nutt. accepted as Ceanothus sanguineus Pursh
• Ceanothus otayensis McMinn
• Ceanothus ovatus auct. non Desf. accepted as Ceanothus herbaceus Raf.
• Ceanothus palmeri Trel.
• Ceanothus papillosus Torr. & Gray
• Ceanothus parryi Trel.
• Ceanothus parvifolius (S. Wats.) Trel.
• Ceanothus perplexans Trel. accepted as Ceanothus greggii Gray
• Ceanothus pinetorum Coville
• Ceanothus polymorphus
• Ceanothus prostratus Benth.
• Ceanothus pubescens (Torr. & Gray ex S. Wats.) Rydb. ex Small accepted as Ceanothus herbaceus Raf.
• Ceanothus pumilus Greene
• Ceanothus purpureus Jepson
• Ceanothus ramulosus (Greene) McMinn accepted as Ceanothus cuneatus (Hook.) Nutt.
• Ceanothus regius (Jepson) McMinn accepted as Ceanothus papillosus Torr. & Gray
• Ceanothus rigidus Nutt. accepted as Ceanothus cuneatus (Hook.) Nutt.
• Ceanothus roderickii Knight
• Ceanothus rugosus Greene
• Ceanothus sanguineus Pursh
• Ceanothus serpyllifolius Nutt.
• Ceanothus serrulatus McMinn
• Ceanothus sonomensis J.T. Howell
• Ceanothus sorediatus Hook. & Arn.
• Ceanothus spinosus Nutt.
• Ceanothus subrotundus
• Ceanothus subsericeus Rydb. accepted as Ceanothus fendleri Gray
• Ceanothus thyrsiflorus Eschsch.
• Ceanothus tiliaefolius
• Ceanothus tomentosus Parry
• Ceanothus vanrensselaeri J.B. Roof
• Ceanothus veitchianus Hook.
• Ceanothus velutinus Dougl. ex Hook.
• Ceanothus verrucosus Nutt.
• Ceanothus vestitus Greene accepted as Ceanothus greggii Gray
• Ceanothus zicyphoides