'Cadillac'  'Cajun Sunrise' 'Calamity Jane' 'Calypso' 'Camelot' 'Canadian Foreign Affairs' 'Candle Glow' 'Candle Wax' 'Candy Dish' (Summers) 'Candy Hearts' H. capitata 'Captain America' 'Captain Atom' 'Captain Kirk' 'Captain Teach' 'Carder Blue' (AHS) 'Carin's Wedding' 'Carnival' 'Carol' 'Carolina Blue' 'Cartwheels' 'Cascades' H. cathayana 'Cat's Eye' 'Cathedral Windows' 'Catherine' 'Celebration' 'Celestial' 'Centerfold' 'Chabo Unazuki' 'Chain Lightning' 'Chalice of Gold' 'Champagne Taste' 'Chartreuse' 'Chartreuse Wedge' 'Chartreuse Wiggles' "Chastain Seedling 04 B1" "Chastain Seedling 9-14-7" "Chastain Seedling BSR 3-21-2" "Chastain Seedling LBSR" 'Cheatin Heart' 'Cheesehead' 'Cheiju' 'Cherry Berry' 'Cherry Berry 5' 'Cherry Tart' 'Chichibu' 'Chiemsee Surprise' 'China Girl' 'Chinese Dragon' 'Chinese Dragon Streak' 'Chinese Dragon Supreme' 'Chinese Sunrise' 'Chirifu Oba' 'Chivalry' 'Choko Nishiki' 'Choo Choo Train' 'Chopsticks' 'Chris’ Little Jewel' 'Chris' Small Talk' 'Christmas Candy' 'Christmas Gold' 'Christmas Tree' 'Christmas Tree Gala' 'Church Mouse' 'Cinnamon Sticks' 'Circus Clown' 'Citation' 'City Lights'  H. clausa  H. clausa normalis H. clavata 'Clear Fork River Valley' 'Clifford's Polar Moon' 'Climax' 'Cloud Nine' 'Cloudburst' 'Clovelly' 'Clyde's Birthday' 'Cody' 'Cold Heart' 'Coldness No. 1' 'Colesburg Loren Zilke' 'Colonel Murphy' 'Color a la Mode' 'Color Fantasy' 'Color Glory' (Aden) 'Colossal' 'Commander Cody' 'Con Te Partiro' 'Confetti Cup' 'Confused Angel' 'Continental Divide' 'Contort' 'Cookie Crumbs' 'Corduroy' 'Corkscrew' 'Cosmic Hippie' 'Cosmic Lace' 'Cosmic Sister' 'Cotton Candy' 'Country Candied Confection' 'County Park' 'Cracker Crumbs' 'Craig's Temptation' 'Cranberry Wine' 'Crayons' 'Crazy Quilt' 'Creek' 'Creme de Menthe' 'Crepe Suzette' 'Crested Reef' 'Crested Surf' 'Cricket' 'Crimson Desire' 'Crinkle Cup' 'Crispula' 'Crispula Viridis' 'Crossroads Hurricane' 'Crowned Imperial' 'Cry Baby' 'Curly Fries' 'Cutting Edge' 'Cuyahoga' 'Cyclops' (Soucek) 'Cynthia'