Asyneuma prenanthoides (Dur.) McVaugh - California harebell. Present in the CalFlora Database but treated as Campanula prenanthoides Durand (California distribution map). Photographs (7) from CalPhotos. Synonymy: Campanula prenanthoides Dur.
Campanula angustiflora Eastw. - Eastwood's bellflower. Present in the CalFlora Database (California distribution map).
Campanula aparinoides Pursh - Marsh bellflower. Synonymy: Campanula aparinoides var. grandiflora Holz., Campanula aparinoides var. uliginosa (Rydb.) Gleason, Campanula uliginosa Rydb.
Campanula aurita Greene - Yukon bellflower.
Campanula bononiensis L. - European bellflower.
Campanula californica (Kellogg) Heller - Swamp bellflower. Present in the CalFlora Database (California distribution map).
Campanula carpatica Jacq. - Tussock bellflower. Image available from the Vascular Plant Image Gallery.
Campanula chamissonis Fedorov - Hairy-flower bellflower.
Campanula divaricata Michx. - Small bonny bellflower. Synonymy: Campanula flexuosa Michx.
Campanula exigua Rattan - Chaparral bellflower. Present in the CalFlora Database (California distribution map).
Campanula floridana S. Wats. ex Gray - Florida bellflower. Synonymy: Rotantha floridana (S. Wats. ex Gray) Small
Campanula glomerata L. - Dane's-blood. Image available from the Vascular Plant Image Gallery.
Campanula griffinii Morin - Griffin's bellflower. Present in the CalFlora Database (California distribution map). Synonymy: Campanula angustiflora var. exilis J.T. Howell
Campanula lanata Friv..
Campanula lasiocarpa Cham. - Alaska bellflower. Synonymy: Campanula lasiocarpa ssp. latisepala (Hultén) Hult‚n, Campanula latisepala Hultén, Campanula latisepala var. dubia Hultén
Campanula latifolia L. - Giant bellflower.
Campanula medium L. - Canterbury-bells.
Campanula parryi Gray - Parry's bellflower.
Campanula patula L. - Spreading bellflower.
Campanula persicifolia L. - Peach-leaf bellflower. Synonymy: Campanula persicifolia var. alba Horton
Campanula piperi T.J. Howell - Olympic bellflower.
Campanula punctata Lam. - Spotted bellflower.
Campanula rapunculoides L. - Creeping bellflower. Present in the Texas flora, no local name. (Texas Distribution by vegetation zone). Synonymy: Campanula rapunculoides var. ucranica (Bess.) K. Koch
Campanula reverchonii Gray - Basin bellflower. Present in the Texas flora and known locally as: Basin bellflower (Texas Distribution by vegetation zone).
Campanula robinsiae Small - Robins' bellflower. Listed by the U.S. FWS as endangered, the FWS local name is Brooksville (=Robins') bellflower and the FWS range is: U.S.A. (FL). FWS Listing information: volume 54 Federal Register 31196; July 27, 1989. Synonymy: Rotantha robinsiae (Small) Small
Campanula rotundifolia L. - Bluebell-of-scotland. Present in the Texas flora and known locally as: Bluebell, harebell (Texas Distribution by vegetation zone). Present in the CalFlora Database (California distribution map). Images available from the Vascular Plant Image Gallery. Synonymy: Campanula alaskana (Gray) W. Wight ex J.P. Anders., Campanula dubia A. DC., Campanula heterodoxa Bong., Campanula intercedens Witasek, Campanula petiolata A. DC., Campanula rotundifolia ssp. intercedens (Witasek) A.& D. Löve, Campanula rotundifolia var. alaskana Gray, Campanula rotundifolia var. intercedens (Witasek) Farw., Campanula rotundifolia var. lancifolia Mert. & Koch, Campanula rotundifolia var. petiolata (A. DC.) J.K. Henry, Campanula rotundifolia var. velutina A. DC., Campanula sacajaweana M.E. Peck
Campanula scabrella Engelm. - Rough bellflower. Present in the CalFlora Database (California distribution map).
Campanula scouleri Hook. ex A. DC. - Pale bellflower. Present in the CalFlora Database (California distribution map). Photographs (4) from CalPhotos.
Campanula sharsmithiae Morin - Mt. hamilton bellflower. Present in the CalFlora Database (California distribution map).
Campanula shetleri Heckard - Castle crags bellflower. Present in the CalFlora Database (California distribution map).
Campanula trachelium L. - Bats-in-the-belfry.
Campanula uniflora L. - Arctic bellflower.
Campanula wilkinsiana Greene - Wilkins' bellflower. Present in the CalFlora Database (California distribution map).
Campanulastrum americanum (L.) Small - American-bellflower. Synonymy: Campanula americana L., Campanula americana var. illinoensis (Fresen.) Farw.
Gadellia lactiflora (Bieb.) Schulkina - Milky-bellflower. Synonymy: Campanula lactiflora Bieb.