• (1) C Ba Lá Chân Th - Cabbage
• (2) Cabbage - Caconi Rouge
• (3) Caconnier - Calanthe Orchid
• (4) Calanthe Orchid - California Jointfir
• (5) California Juniper - Calliopsis
• (6) Callisto Daylily - Campylium Moss
• (7) Campylium Moss - Cancer Bush
• (8) Cancer Bush - Cannibals Tomato
• (9) Canning Ay - Cantaloupe
• (10) Cantaloupe - Capetillo
• (11) Capeweed - Caramillo
• (12) Caraná - Caribbean Howdy Daylily
• (13) Caribbean Lavender Butterfly Daylily - Carolina Poplar
• (14) Carolina Poplar - Carrot
• (15) Carrot - Caserta Daylily
• (16) Cases Milkvetch - Catawba
• (17) Catawba - Cauliflower
• (18) Cauliflower - Cedro Dulce
• (19) Cedro Grande - Centipede Tonga-Vine
• (20) Centipede Tonga-vine - Châtaigne D´eau Bicorne
• (21) Châtaigne D´eau Européenne - Champagne Canna Lily
• (22) Champagne Chilling Daylily - Chardon écailleux
• (23) Chardon épineux - Checker Mallow
• (24) Checker Mallow - Chess Apple
• (25) Chess Brome - Chidori Red Flowering Kale
• (26) Chidori Rhododendron - China Moth Daylily
• (27) China Mulkak - Chinese Date
• (28) Chinese Datura - Chinese Pistache
• (29) Chinese Pistachio - Chiricahua Mountain Stinkweed
• (30) Chiricahua Mountain Tansyaster - Chornaya Karagana
• (31) Chornobyl - Chum´ah Marokanit
• (32) Chum´ah Megubbevet - Cineraria
• (33) Cingkeh (Indonesia) - Citronmētra
• (34) Citronnelle - Claytonie Perfoliée
• (35) Claytons Interrupted Fern - Cliff Heathgoldenrod
• (36) Cliff Indian Paintbrush - Clown Spikes
• (37) Cloyds Love Tall Bearded Iris - Coast Velvet-Bush
• (38) Coast Violet - Cockscomb
• (39) Cockscomb - Colbaga
• (40) Colbaga - Coleus
• (41) Coleus - Columbian Stitchwort
• (42) Columbian Thorny Bamboo - Common Camellia
• (43) Common Camellia - Common Ivy
• (44) Common Ivy - Common Scurvygrass
• (45) Common Scurvygrass - Comtesse de Flandre Rhododendron
• (46) Comtesse de Hainaut Rhododendron - Contrahierba
• (47) Contrast In Styles Siberian Iris Iris Si - Coquette Azalea
• (48) Coquette de Flandres Rhododendron - Coralbells
• (49) Coralbells - Corn
• (50) Corn - Cory's Mormon-Tea
• (51) Cory's Woolly Milkvetch - Cottonwood Spring Suncup
• (52) Cottonwood Springs Suncup - Cow Pea
• (53) Cow Pea - Crabs Claw Stratiotes Aloides
• (54) Crabs Eye - Cream Violet
• (55) Cream Wild Indigo - Creeping Wintergreen
• (56) Creeping Wire Vine - Crimson Flag
• (57) Crimson Flag - Croton
• (58) Croton - Cuban Oregano
• (59) Cuban Palm - Cucumber
• (60) Cucumber - Cumino Dei Prati
• (61) Cumino Tedesco - Curtis Hutton Daylily
• (62) Curtis Star-Grass - Cutleaf Goosefoot
• (63) Cutleaf Goosefoot - Cyrtandra
• (64) Cyrtandra - 罌粟