United States

Cayenne porterweed

Stachytarpheta cayennensis

cavernous crystalwort

Riccia cavernosa

Arrowhead Spiketail

Cordulegaster obliqua

Cave cobweb spider

Eidmannella pallida

Cave cobweb spider

Nesticella mogera

Arrow-Grass

Triglochin maritima

Aphid

Myzocallis carpini

American Cauliflower Mushroom

Sparassis americana

Algal Pin Lichen

Chaenothecopsis pusiola

Cauliflower Foam Lichen

Stereocaulon botryosum

Caucasus catmint

Nepeta grandiflora

Arrow Clubtail

Stylurus spiniceps

Caucasian bluestem

Bothriochloa bladhii

cat-tongue liverwort

Conocephalum salebrosum

Arrow bamboo

Pseudosasa japonica

Aphid

Metopolophium festucae

Cattail bug

Chilacis typhae

Cat'S Ear

Hypochaeris radicata

Arrow Arum

Peltandra virginica

Aphid

Pemphigus spyrothecae

Caterpillar-plant

Scorpiurus muricatus

Catchfly

Silene antirrhina

Arrhenia epichysium

Catberry

Ilex mucronata

Canada Rhododendron

Rhododendron canadense

Aromatic Sumac

Rhus aromatica

Aphid

Myzus lythri

Canada Redbud

Cercis canadensis

Canada Honewort

Cryptotaenia canadensis

Canada Goldenrod

Solidago altissima

Canada Darner

Aeshna canadensis

Aromatic Knight

Tricholoma lascivum

Aphid

Pseudacaudella rubida

American Bur-Reed

Sparganium americanum

Algae

Cutleria cylindrica

Gila Monster

Heloderma suspectum

Canada Cinquefoil

Potentilla canadensis

Canada Bluegrass

Poa compressa

Arnold Hawthorn

Crataegus mollis

Canada Beadruby

Maianthemum canadense

Campylopus moss

Campylopus pilifer

Aphid

Pterocomma pilosum

Campernelle jonquil

Narcissus odorus

Argyle apple

Eucalyptus cinerea

Camellia

Camellia japonica

Cambridge Milk-Parsley

Selinum carvifolia

Argid Sawfly

Arge ochropus

Aphid

Microlophium carnosum

American Burnweed

Erechtites hieraciifolius

Calycina vulgaris

Calothrix parietina

Argent & Sable

Rheumaptera hastata

Caloneis permagna

Calogaya decipiens

Argentine senna

Senna corymbosa

Aphid

Tinocallis saltans

Calocera glossoides

Argentine pepperweed

Lepidium bonariense

Cape bugle-lily

Watsonia borbonica

Cape Breton Firefly

Photuris fairchildi