Caesalpinia crista L. -- Samoan name: anaoso
Caesalpinia pulcherrima (L.) Sw. -- Samoan name: lau pa
Calophyllum inophyllum L. -- Samoan name: fetau
Calystegia affinis Endl. -- Samoan name: lautafifi I
Cananga odorata (Lam.) Hook.f. et Thoms. -- Samoan name: moso'oi
Canarium samoense Engl. -- Samoan name: ma'ali
Canarium vitiense A.Gray -- Samoan name: ma'ali
Canavalia spp. -- Samoan name: fue sina I/II
Canavalia maritima (Aubl.) Thou. -- Synonym of Canavalia rosea (Sw.) DC.
Canavalia rosea (Sw.) DC. -- Samoan names: fuefue fai va'a, fue vili
Canna indica L. -- Samoan name: fanamanu
Canthium merrillii (Setch.) Christoph. -- Samoan name: olavai I
Capparis spp. -- Samoan name: pulu
Capsicum spp. -- Samoan name: polo
Capsicum annuum L. -- Samoan name: polo
Capsicum frutescens L. -- Samoan name: polo
Cardamine sarmentosa Forst.f. -- Synonym of Rorippa sarmentosa (DC.) Macbr.
Carica papaya L. -- Samoan name: esi
Carinta herbacea (Jacq.) W.F.Wight in Saff. -- Samoan name: matamataaitu
Caryophyllus malaccensis Stokes -- Synonym of Syzygium malaccense (L.) Merr. et Perry
Cassia alata L. -- Synonym of Senna alata (L.) Roxb.
Cassia sophera L. -- Synonym of Senna sophera (L.) Roxb.
Cassytha filiformis L. -- Samoan name: fetai
Casuarina equisetifolia J.R. et G.Forst. -- Samoan name: toa
Catharanthus roseus (L.) G.Don -- Samoan name: fetû
Ceiba pentandra (L.) Gaertn. -- Samoan name: vavae
Centella asiatica (L.) Urb. -- Samoan name: togo
Centotheca lappacea (L.) Desv. -- Samoan name: sefa
Cerbera lactaria Ham. -- Synonym of Cerbera manghas L.
Cerbera manghas L. -- Samoan name: leva
Cerbera odollam Gaertn. -- Samoan name: leva
Chamaesyce hirta (L.) Millsp. -- Samoan name: Euphorbia hirta L.
Chariessa samoensis (A.Gray) Engl. -- Samoan name: ala'a
Cinnamomum verum Presl -- Samoan name: tigamoni
Cinnamomum zeylanicum Bl. -- Synonym of Cinnamomum verum Presl
Citrus spp. -- Samoan name: moli
Citrus aurantiifolia (Christm.) Swingle -- Samoan name: tipolo
Citrus aurantium L. -- Synonym of Citrus vulgaris Risso
Citrus aurantium L. var. sinensis L. -- Synonym of Citrus sinensis (L.) Osb.
Citrus hystrix DC. -- Samoan name: moli u'u
Citrus limon (L.) Burm.f. -- Samoan name: tipolo
Citrus macroptera Montr. -- Samoan name: moli u'u
Citrus medica L. -- Samoan name: tipolo
Citrus sinensis (L.) Osb. -- Samoan name: moli 'aina
Citrus vulgaris Risso -- Samoan name: moli u'u
Clerodendrum amicorum Seem. -- Synonym of Faradaya amicorum (Seem.) Seem.
Clerodendrum inerme (L.) Gaertn. -- Samoan name: aloalo tai
Cocos nucifera L. -- Samoan name: niu
Codiaeum variegatum (L.) Bl. -- Samoan name: 'ave'ave
Coix lacryma-jobi L. -- Samoan name: sanasana
Coleus amboinicus Lour. -- Samoan name: militini
Coleus aromaticus Benth. -- Synonym of Coleus amboinicus Lour.
Coleus blumei Benth. -- Samoan name: pate
Coleus scutellarioides (L.) Benth. -- Samoan name: pate
Colocasia antiquorum Schott in Schott et Endl. -- Synonym of Colocasia esculenta (L.) Schott
Colocasia esculenta (L.) Schott -- Samoan name: talo
Colubrina asiatica (L.) Brongn. -- Samoan name: fîsoa
Commelina diffusa Burm.f. -- Samoan name: mau'u toga
Commelina nudiflora L. sensu Burkill -- Synonym of Commelina diffusa Burm.f.
Cordyline fruticosa (L.) Chev. -- Samoan name: ti
Cordyline terminalis (L.) Kunth -- Synonym of Cordyline fruticosa (L.) Chev.
Crinum asiaticum L. -- Samoan name: lau talotalo
Cucurbita spp. -- Samoan name: fagufagu
Curcuma domestica Val. -- Synonym of Curcuma longa L.
Curcuma longa L. -- Samoan name: ago
Cymbopogon citratus (DC.) Stapf -- Samoan name: moegâlô
Cyperus rotundus L. -- Samoan name: mumuta