| Name? | Group? | Type? | Source? | Images? |
| 'Cameo' ('2G') | Gable | evg |
Galle85 |
| 'Cameo' | Kaempferi | evg |
Galle85 |
| 'Cameronian' | | azd |
IRRC04 |
| 'Cameroon' | Gable | evg |
Galle85 |
| 'Camiel de Conning' | | evg |
IRRC04 |
| 'Camilla's Blush' | Canescens | dec |
RareFind04 |
| 'Camille van den Bossche' | Indian | evg |
IRRC04 |
| 'Camille Vervaene' | Belgian Indian | evg |
Galle85 |
| 'Camisole Burgundy' | Kaempferi | evg |
Galle87 |
| 'Camisole Crimson' | Kaempferi | evg |
Galle87 |
| 'Camisole Fuchsia' ('Camisole Fuschia') | Carlson | evg |
IRRC04 |
| 'Camisole Fuschia' see 'Camisole Fuchsia' | Carlson | evg |
Galle87 |
| 'Camisole Rose' | Kaempferi | evg |
Galle87 |
| 'Campbellii' | Ghent | dec |
IRRC04 |
| 'Campfire' (F3G) | Gable | evg |
Galle85 |
| 'Campfire' | Glenn Dale | evg | Galle85 | b |
| 'Campfire' see 'Hino Scarlet' | Kaempferi | evg |
Galle85 |
| 'Camp Red' see 'Camp's Red' | Cumberlandense | dec |
Galle85 |
| 'Camp's Red' ('Camp Red') | Cumberlandense | dec |
Galle85 |
| canadense ('Rhodora') | Species | dec |
Galle85 |
| canadense albiflorum | Canadense | dec |
RareFind04 |
| 'Canaliculatum' | | dec |
IRRC04 |
| 'Canari' | Ghent | dec |
IRRC04 |
| 'Canaris' | Solent | dec |
IRRC04 |
| 'Canary' | Knap Hill | dec |
IRRC04 |
| 'Canary Isles' | Aromi | dec | Azalean25:2 | b |
| 'Canary Yellow' | EX-Henny | dec |
Galle85 |
| 'Canasta' | Exbury | dec |
Galle85 |
| 'Canby' | Arneson | dec |
IRRC04 |
| 'Can Can' | Greenwood | evg |
Galle85 |
| 'Candeur' ('Candew') | Mollis | dec |
IRRC04 |
| 'Candew' see 'Candeur' | Mollis | dec |
Galle87 |
| 'Candice' | Greenwood | evg |
Galle85 |
| 'Candida' | Ghent | dec |
IRRC04 |
| 'Candida' | Indian | evg |
IRRC04 |
| 'Candidissimum'1 | Indian | evg |
IRRC04 |
| 'Candidissimum'2 | Indian | evg |
IRRC04 |
| 'Candidissimum' | Ghent | dec |
IRRC04 |
| 'Candidissimum Maximum' | Indian | evg |
IRRC04 |
| 'Candidum Elegans' | Indian | evg |
IRRC04 |
| 'Candidum Striatissimum' | Indian | evg |
IRRC04 |
| 'Candidum Striatum' | Indian | evg |
IRRC04 |
| 'Candlelight' | Coolidge | evg |
Galle85 |
| 'Candlelight' | Glenn Dale | evg |
Galle85 |
| 'Candy' | Greenwood | evg |
Galle85 |
| 'Candy' | Indian | evg |
IRRC04 |
| 'Candy Stick' see 'Candystick' | Belgian Indian | evg |
Galle85 |
| 'Candystick' ('Candy Stick') | Belgian Indian | evg |
Galle85 |
| 'Candy Stripe' ('Candy Stripes') | Aus. & NZ | evg |
Galle85 |
| 'Candy Stripe' | Occidentale | dec |
Greer04 |
| 'Candy Stripes' see 'Candy Stripe' | Aus. & NZ | evg |
Galle85 |
| canescens (canescens var. candidum , Florida Pinxter Azalea, Piedmont Azalea, Sweet Azalea) | Species | dec | Galle85 | p, p, b, b, o |
| canescens var. candidum see canescens | Species | dec |
Galle85 |
| 'Cangalla' see 'Cangallo' | Kurume | evg |
IRRC04 |
| 'Cangallo' ('Cangalla', 'Cengallo', 'Congalo') | Kurume | evg |
Galle87 |
| 'Cannon's Double' | Exbury | dec | Galle85 | b |
| 'Cantabile' | Glenn Dale | evg | Galle85 | b |
| 'Can't Elope' | Carlson | dec |
Galle85 |
| 'Canterbury' | Ilam | dec |
Galle85 |
| 'Canterbury Bell' | Indian | evg |
IRRC04 |
| 'Cantico' | Greenwood | evg |
Galle85 |
| 'Canton' | Chisolm-Merritt | evg |
Galle85 |
| 'Canyalo' | Kurume | evg |
Galle85 |
| 'Canzonetta' | Hachmann | evg |
IRRC04 |
| 'Cap Arcona' | Bruns | dec |
IRRC04 |
| 'Cape Cod' | McDonald | unk |
Roslyn94 |
| 'Capella' | Glenn Dale | evg | Galle85 | b |
| 'Capitaine Gau' | Belgian Indian | evg |
Galle85 |
| 'Capitatum' | Ghent | dec |
IRRC04 |
| 'Capitatum Incarnatum' | Ghent | dec |
IRRC04 |
| 'Capitola' | Eden | evg |
Galle85 |
| 'Capitola' | Kerrigan | evg |
Galle85 |
| 'Capri' | Brooks | evg |
Galle85 |
| 'Capri' | Greenwood | evg |
Galle85 |
| 'Caprice' | Exbury | dec |
Galle85 |
| 'Caprice' | Glenn Dale | evg | Galle85 | b |
| 'Caprice' | Mossholder | evg | Galle87 | b, b |
| 'Caprice Sport' | Mossholder | evg |
Steele03 |
| 'Captain Blood' | Kerrigan | evg |
Galle85 |
| 'Captain Carsgen' | Mollis | dec |
IRRC04 |
| 'Captain's Choice' (Y22-2) | Cripple Creek | evg |
Galle85 |
| 'Captivation' | Glenn Dale | evg | Galle85 | b |
| 'Carat' | Boskoop | dec |
Galle85 |
| 'Caraval' | Glenn Dale | evg | Galle85 | |
| 'Carbineer' | Glenn Dale | evg | Galle85 | b |
| 'Cardinal' | Ghent | dec |
Galle85 |
| 'Cardinal' | Indian | evg |
IRRC04 |
| 'Cardinal' see 'Tsuta-momiji' | Kurume | evg |
IRRC04 |
| 'Cardinal' | Schepens | evg |
IRRC04 |
| 'Cardinale' ('Cardinalis') | Arnold | evg |
IRRC04 |
| 'Cardinale' | | evg |
IRRC04 |
| 'Cardinalis' see 'Cardinale' | Arnold | evg |
Galle85 |
| 'Cardinal Mercier' | Indian | evg |
IRRC04 |
| 'Cardinal van Roey' | Indian | evg |
IRRC04 |
| 'Cardon' ('Cardoniana', 'Cardonianum', 'Cardonii') | Ghent | dec |
Galle87 |
| 'Cardoniana' see 'Cardon' | Ghent | dec |
IRRC04 |
| 'Cardonianum' see 'Cardon' | Ghent | dec |
IRRC04 |
| 'Cardonii' see 'Cardon' | Ghent | dec |
IRRC04 |
| 'Caress' | Glenn Dale | evg | Galle85 | b |
| 'Carillon' | Beltsville | evg |
Galle85 |
| 'Carla' | Carla | evg |
Galle85 |
| 'Carl Brosch' | Pride | evg |
Galle85 |
| 'Carl Enke' | Indian | evg |
IRRC04 |
| 'Carl Glazer' | Aus. & NZ | evg |
Galle85 |
| 'Carl Glazer' see 'Karl Glaser' | Indian | evg |
IRRC04 |
| 'Carl Kirsten' | Indian | evg |
IRRC04 |
| 'Carl Nobelius' | Kelmscott | evg |
IRRC04 |
| 'Carlos Steyaert' | Indian | evg |
IRRC04 |
| 'Carl Petzold' | Indian | evg |
IRRC04 |
| 'Carl Schultz'1 | Indian | evg |
IRRC04 |
| 'Carl Schultz'2 | Indian | evg |
IRRC04 |
| Carlson's Blaze-of-Glory Group | Carlson | dec |
IRRC04 |
| 'Carlson's Canary' | EX-Carlson | dec |
Galle85 |
| 'Carlson's Chameleon' | Carlson | dec |
Galle87 |
| 'Carlson's Coral Flameboyant' | Calendulaceum | dec |
Galle87 |
| 'Carlson's Double Dip' ('Double Dip') | EX-Carlson | dec |
Galle87 |
| Carlson's Face'em Down Group | Carlson | evg |
IRRC04 |
| 'Carlson's Full Moon' | EX-Carlson | dec |
Galle85 |
| 'Carlson's Golden Flameboyant' | Calendulaceum | dec |
Galle87 |
| 'Carlson's Gold Nuggets' | EX-Carlson | dec |
Galle85 |
| Carlson's Hardy Hearties Group | Carlson | evg |
IRRC04 |
| 'Carlson's Itsy Bitsy' | Carlson | evg |
Carlson92 |
| Carlson's Jeepers Creepers Group | Carlson | evg |
IRRC04 |
| 'Carlson's Moonlight Bay' | Carlson | dec |
IRRC04 |
| 'Carlson's Moonlight Serenade' | Carlson | dec |
IRRC04 |
| 'Carlson's Moon Mist' | Carlson | dec |
IRRC04 |
| 'Carlson's Orange Flameboyant' | Calendulaceum | dec |
Galle87 |
| Carlson's Pink Postscript Group | Carlson | dec |
IRRC04 |
| Carlson's Postscript Group | Carlson | dec |
IRRC04 |
| 'Carlson's Red Hot' | Carlson | dec |
Galle85 |
| 'Carlson's Sophisticated Lady' | Carlson | dec |
Galle85 |
| 'Carlson's Strawberry Glow' | Carlson | dec |
Galle85 |
| 'Carlson's Tangerine' | Carlson | dec |
Galle85 |
| 'Carlson's Yellow Flame' | Calendulaceum | dec |
Galle87 |
| 'Carlson's Yellow Flameboyant' | Calendulaceum | dec |
Galle87 |
| 'Carlson's Yellow Scentsation' | Carlson | dec |
Galle87 |
| 'Carlunbrata' | Indian | evg |
IRRC04 |
| 'Carmel' | Glenn Dale | evg | Galle85 | b |
| 'Carmen'1 | Indian | evg |
IRRC04 |
| 'Carmen'2 | Indian | evg |
IRRC04 |
| 'Carmen' | Belgian Indian | evg |
Galle85 |
| 'Carmen' see 'Ilam Carmen' | Ilam | dec |
Galle87 |
| 'Carmen' | Kaempferi | evg |
Galle85 |
| 'Carmen' | Mollis | dec |
IRRC04 |
| 'Carminata Splendens' see 'Carminatum Splendens' | Amoena | evg |
Galle85 |
| 'Carminatum' | Henderson | unk |
IRRC04 |
| 'Carminatum Crispiflorum' | Amoena | evg |
IRRC04 |
| 'Carminatum Splendens' ('Carminata Splendens') | Amoena | evg |
IRRC04 |
| 'Carmine King' | Bobbink-Atkins | evg |
Galle85 |
| 'Carmine Prince' | Kurume | evg |
IRRC04 |
| 'Carmine Queen' see 'Kurai-no-himo' | Kurume | evg |
Galle85 |
| 'Carmineum Perfectum' | Indian | evg |
IRRC04 |
| 'Carmosinum' | | unk |
IRRC04 |
| 'Carnation' | Indian | evg |
IRRC04 |
| 'Carneum'1 | | dec |
IRRC04 |
| 'Carneum'2 | | dec |
IRRC04 |
| 'Carneum'3 | | dec |
IRRC04 |
| 'Carneum' | Smith | evg |
IRRC04 |
| 'Carneum Coccineum' | Ghent | dec |
IRRC04 |
| 'Carneum Crispum' | Ghent | dec |
IRRC04 |
| 'Carneum Delicatissimum' | Ghent | dec |
IRRC04 |
| 'Carneum Discolor' | Ghent | dec |
IRRC04 |
| 'Carneum Elegans' | | unk |
IRRC04 |
| 'Carneum Elegantissimum' ('Luteum Carneum Elegantissimum') | | azd |
IRRC04 |
| 'Carneum Grandiflorum' | Ghent | dec |
IRRC04 |
| 'Carneum Partitum' | | dec |
IRRC04 |
| 'Carneum Plenum' | | dec |
IRRC04 |
| 'Carneum Superbum' | | dec |
IRRC04 |
| 'Carneum Superbum' | Indian | evg |
IRRC04 |
| 'Carnival' | Glenn Dale | evg | Galle85 | b |
| 'Carnival' see 'Nuccio's Carnival' | Nuccio | evg |
IRRC04 |
| 'Carnival Candy' see 'Nuccio's Carnival Candy' | Nuccio | evg |
IRRC04 |
| 'Carnival Clown' see 'Nuccio's Carnival Clown' | Nuccio | evg |
IRRC04 |
| 'Carnival Fanfare' see 'Nuccio's Carnival Fanfare' | Nuccio | evg |
IRRC04 |
| 'Carnival Firecracker' see 'Nuccio's Carnival Firecracker' | Nuccio | evg |
IRRC04 |
| 'Carnival Jackpot' see 'Nuccio's Carnival Jackpot' | Nuccio | evg |
IRRC04 |
| 'Carnival Magic' see 'Nuccio's Carnival Magic' | Nuccio | evg |
IRRC04 |
| 'Carnival Music' see 'Nuccio's Carnival Music' | Nuccio | evg |
IRRC04 |
| 'Carnival Parade' see 'Nuccio's Carnival Parade' | Nuccio | evg |
IRRC04 |
| 'Carnival Queen' see 'Nuccio's Carnival Queen' | Nuccio | evg |
IRRC04 |
| 'Carnival Rocket' see 'Nuccio's Carnival Rocket' | Nuccio | evg |
IRRC04 |
| 'Carnival Time' see 'Nuccio's Carnival Time' | Nuccio | evg |
IRRC04 |
| 'Carnosum Elegans' | Indian | evg |
IRRC04 |
| 'Carol' | Beltsville | evg |
Galle85 |
| 'Carol' (B8G) | Gable | evg |
Galle85 |
| 'Carola Kronprinzessin von Sachsen' | Indian | evg |
IRRC04 |
| 'Carol Ann' | White | evg |
AzAcres84 |
| 'Carol Anne' | Caldwell | evg |
IRRC04 |
| 'Carol Ann Fiery' | Eden | evg |
Galle85 |
| 'Carol Brown' | Eden | evg |
Galle85 |
| 'Carolina' | | unk |
IRRC04 |
| 'Carolina Nude' | Lewis | azd |
IRRC04 |
| Carolina Rose Group | Knippenberg | azd |
IRRC04 |
| 'Carolina Weishaupt' see 'Caroline Weisshaupt' | Indian | evg |
IRRC04 |
| 'Caroline' | Aus. & NZ | evg |
Galle85 |
| 'Caroline' | Girard | evg |
Girard04 |
| 'Caroline' see 'Hachmann's Caroline' | Hachmann | dec |
IRRC04 |
| 'Caroline Bourke' | Aus. & NZ | evg |
Galle85 |
| 'Caroline Coe' | Rutherford | evg |
Galle85 |
| 'Caroline de Moor' | Indian | evg |
IRRC04 |
| 'Caroline de Schryver' see 'Mademoiselle Caroline de Schryver' | Indian | evg |
IRRC04 |
| 'Caroline Dorman' | Back Acres | evg |
Galle85 |
| 'Caroline Gable' (96G) | Gable | evg |
Galle85 |
| 'Caroline Graham' | Rutherford | evg |
Galle85 |
| 'Caroline Weishaupt' see 'Caroline Weisshaupt' | Indian | evg |
IRRC04 |
| 'Caroline Weisshaupt' ('Carolina Weishaupt', 'Caroline Weishaupt') | Indian | evg |
IRRC04 |
| 'Carol Kitchen' | Linwood Hardy | evg |
Galle85 |
| 'Carol Kittel' | Weiskittel | evg |
Roslyn95 |
| 'Carol Seidler' | | evg |
Steele03 |
| 'Carolyn' (HS 85-13-28) | Holly Springs | evg | Vines90 | b |
| 'Carolyn Fiery' | Smith | evg |
IRRC04 |
| 'Carolyn's Day' | Harris | evg |
IRRC04 |
| 'Carrara' | Glenn Dale | evg | Galle85 | b, b |
| 'Carrie Amanda' (3216) | Schroeder | evg |
Galle87 |
| 'Carror' | Carla | evg |
Galle85 |
| 'Cartonia' | Ghent | dec |
IRRC04 |
| Cartonii Group | Highclere | azd |
IRRC04 |
| 'Caryophilloides' like 'Matshushima' | Indian | evg |
IRRC04 |
| 'Caryophyllum' | Indian | evg |
IRRC04 |
| caryophyllum see rubropilosum | Species | evg |
Galle85 |
| 'Casablanca' | Beltsville | evg |
Galle85 |
| 'Casablanca Improved' | | evg |
IRRC04 |
| 'Casablanca Tetra' see 'Casablanca Tetraploid' | Tetraploid | evg |
IRRC04 |
| 'Casablanca Tetraploid' ('Casablanca Tetra') | Tetraploid | evg |
Galle85 |
| 'Casandra Vinck' | Smith | evg |
IRRC04 |
| 'Cascade' | Glenn Dale | evg |
Galle85 |
| 'Cascade' | Shammarello | evg |
Galle85 |
| 'Cascade Pink' | Arneson | dec |
IRRC04 |
| 'Cassius' | Indian | evg |
IRRC04 |
| 'Cassley' | Millais | dec |
IRRC04 |
| 'Castor' | Indian | evg |
IRRC04 |