C - Scientific names starting on C
| Cakile maritima ssp. islandica | Ishavsreddik | Artic Sea Rocket | No picture yet | No picture yet | |
| Calamagrostis neglecta ssp. groenlandica | Smårørkvein | Narrow Small-reed |  |
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| Campanula rotundifolia ssp. gieseckiana | Arktisk blåklokke | Hairbell, Bluebell | R |  |
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| Campanula uniflora | Høgfjellsklokke | Alpine Hairbell, Alpine Bluebell |  |
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| Cardamine bellidifolia ssp. bellidifolia | Høgfjellskarse | Alpine Cress, Alpine Bitter-cress |  |
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| Cardamine pratensis ssp. angustifolia | Polarkarse | Polar Cress (Cuckooflower) |
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| Carex aquatilis ssp. stans | Nordlandsstarr | Water Sedge | R | No picture yet | No picture yet |
| Carex bigelowii | Stivstarr |  |
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| Carex capillaris ssp. fuscidula | Hårstarr | Hair Sedge | R |  |
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| Carex fuliginosa ssp. misandra | Dubbestarr | Nodding Sedge |  |
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| Carex glacialis | Rabbestarr | Glacier Sedge, Ridge Sedge | R |  |
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| Carex glareosa ssp. glareosa | Grusstarr | Gravel Sedge, Saltmarsh Sedge |  |
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| Carex krausei | Islandsstarr | R |  |
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| Carex lachenalii | Rypestarr | Arctic Hare's-foot |  |
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| Carex lidii | Lidstarr | R |  |
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| Carex marina ssp. pseudolagopina | Buttstarr | Sea sedge |  | No picture yet | |
| Carex maritima | Buestarr | Curved Sedge |  |
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| Carex nardina ssp. hepburnii | Skjeggstarr | Cushion Sedge, Nard Sedge |  |
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| Carex parallela ssp. parallela | Smalstarr | Narrow-leaved Sedge |  |
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| Carex rupestris | Bergstarr | Rock Sedge |  |
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| Carex saxatilis ssp. laxa | Skaftblankstarr | Russet Sedge |  |
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| Carex subspathacea | Ishavsstarr | Arctic Saltmarsh Sedge | No picture yet | No picture yet | |
| Carex ursina | Isbjørnstarr | Polar Bear Sedge |  |
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| Cassiope tetragona ssp. tetragona | Kantlyng | White Arctic Bell-heather |  |
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| Cerastium alpinum | Fjellarve | Alpine Mouse-ear | No picture yet | No picture yet | |
| Cerastium arcticum | Snøarve | Arctic Mouse-ear |  |
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| Cerastium cerastoides | Brearve | Starwort Mouse-ear | No picture yet | No picture yet | |
| Cerastium regelii | Polararve | Polar Mouse-ear |  |
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| Chrysosplenium tetrandrum | Dvergmaigull | Dwarf Golden-saxifrage |  |
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| Cochlearia groenlandica | Polarskjørbuksurt | Polar Scurvygrass |  |
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| Comastoma tenellum | Småsøte | R |  |
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| Coptidium lapponicum | Lappsoleie | Lapland Buttercup |  |
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| Coptidium pallasii | Glinsesoleie | Glossy Buttercup | R |  |
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| Coptidium X spitsbergense | Svalbardsoleie | Svalbard Buttercup |  |
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| Cystopteris fragilis var. dickieana | Berglokk | Dickie's Bladder-fern |  |
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