United States

Agrimony

Agrimonia eupatoria

Near Threatened

Ajuga

Ajuga reptans

Alder

Alnus glutinosa

Alder leaf beetle

Agelastica alni

Alder Spittlebug

Aphrophora alni

All Species in United States

Christplant

Euphorbia milii

Chrome-Footed Bolete

Harrya chromipes

Chrome-Footed Bolete

Harrya chromapes

chrysalis snail

Lauria cylindracea

Near Threatened

chrysanthemum aphid

Macrosiphoniella sanborni

Chrysanthemum Gall Midge

Rhopalomyia chrysanthemi

Chufa (Edible Variety)

Cyperus esculentus

Chukar / Chukar Partridge

Alectoris chukar

Cigarette beetle

Lasioderma serricorne

Cigar flower

Cuphea ignea

Ciliate Elsholtzia

Elsholtzia ciliata

ciliate fringewort

Ptilidium ciliare

Ciliate Loosestrife

Lysimachia ciliata

Ciliate Wrinkle-Lichen

Tuckermannopsis ciliaris

Ciliolate Aster

Symphyotrichum ciliolatum

Cimbicid sawfly

Abia lonicerae

Data Deficient

Cinder Lichen

Aspicilia cinerea

cinereus shrew

Sorex cinereus

cinnabar

Tyria jacobaeae

Cinnabar Chanterelle

Cantharellus cinnabarinus

Cinnabar Oysterling

Crepidotus cinnabarinus

Vulnerable

Cinnabar Powdercap

Cystodermella cinnabarina

Vulnerable

Cinnamom Rose

Rosa majalis

Cinnamon

Cinnamomum verum

Cinnamon Navel

Omphalina pyxidata

Cinnamon Porecrust

Fuscoporia ferrea

Cinnamon Webcap

Cortinarius cinnamomeus

Circled Milkcap

Lactarius circellatus

Circular-seamed fly

Trachyopella atomus

Circular-seamed fly

Rachispoda fuscipennis

Citrine Forktail

Ischnura hastata

Citron

Citrus medica

Citrus black spot

Phyllosticta citricarpa

Citrus huanglongbing

Liberibacter asiaticus

Citrus leafminer

Phyllocnistis citrella

Citrus mealybug

Planococcus citri

City Dot Lichen

Scoliciosporum chlorococcum

City Goosefoot

Oxybasis urbica

Extinct

Cladopodiella Moss

Odontoschisma fluitans

Clammy Cudweed

Pseudognaphalium macounii

Clammy Ground-Cherry

Physalis heterophylla

Clammy Locust

Robinia viscosa

Clammy Sowthistle

Sonchus tenerrimus

Clammyweed

Polanisia dodecandra

Clamp-tipped Emerald

Somatochlora tenebrosa

Clark'S Mining Bee

Andrena clarkella

Clary

Salvia sclarea

Clasped Pondweed

Potamogeton perfoliatus

Clasping Bellwort

Triodanis perfoliata

Clasping heliotrope

Heliotropium amplexicaule

Clasping Henbit

Lamium amplexicaule

Clasping Mullein

Verbascum phlomoides

Clasping pepperweed

Lepidium perfoliatum

Clasp Twisted Stalk

Streptopus amplexifolius

Clavate Bent

Agrostis clavata

Clavel De Muerto

Tithonia rotundifolia

Clay-colored Sparrow

Spizella pallida

Clay-Coloured Weevil

Otiorhynchus singularis

Clay-Gilled Milkcap

Lactarius argillaceifolius

Clayweed

Tussilago farfara