Caladenia atroclavia Black-clubbed Spider Orchid (E)
Caladenia carnea var. carnea Pink Fairy, Pink Fingers, Pinkies
Caladenia flaccida Daddy Long Legs, Flaccid Spider Orchid
Caladenia fuscata Dusky Fingers
Caladenia sp. (Stanthorpe R.Crane 1448)
Calandrinia eremaea Small Purslane, Twining Purslane
Calandrinia pickeringii Pink Purslane
Caleana major Bee Orchid, Duck Orchid, Flying Duck Orchid, Flying Ducks, Large Duck Orchid
Calocephalus citreus Lemon Beauty-heads
Calochilus campestris Copper Beard Orchid
Calochilus gracillimus Late Beard Orchid, Slender Beard Orchid
Calochilus robertsonii Purple Beard Orchid, Brown Beards Orchid, Father Christmas Orchid, Swamp Beard Orchid
Calotis cuneifolia Bindi-eye, Blue Burr-daisy, Purple Burr-daisy
Calotis dentex White Burr-daisy
Calytrix tetragona Common Fringe-myrtle, Fringe Myrtle, Heath Myrtle, White Fringe-myrtle
Capillipedium parviflorum Scented Top, Scented-top Grass
Carex appressa Tall Sedge
Carex gaudichaudiana Tufted Sedge
Carex inversa Knob Sedge
Carex lobolepis -
Cassinia compacta -
Cassinia copensis -
Cassinia longifolia Cauliflower Bush, Long-leaf Cassinia, Shiny Cassinia
Cassinia quinquefaria Cough Bush, Dead Finish, Rosemary Shrub, Sticky Coughbush, Wild Rosemary
Cassinia uncata Sticky Cassinia
Cassinia wyberbensis -
Cassytha pubescens Dodder Laurel, Downy Devil's Twine, Downy Dodder-laurel, Hairy Dodder, Spilled Devil’s Twine
Casuarina cunninghamiana subsp. cunninghamiana Creek Oak, Fire Oak, River Oak, River She-oak
Cayratia clematidea Native Grape, Slender Grape
Cenchrus purpurascens Swamp Foxtail
Cenchrus spinifex Spiny Burr Grass (*)
Centaurea calcitrapa Augusta Thistle, Purple Star-thistle, Red Star-thistle, Star Thistle (*)
Centaurium erythraea Australian Centaury, Common Centaury (*)
Centella asiatica Gotu Cola, Indian Pennywort
Centipeda minima subsp. minima Spreading Sneeze Weed
Centrolepis fascicularis Tufted Centrolepis
Centrolepis strigosa Hairy Centrolepis
Cheiranthera borealis Finger Flower
Chenopodium album Fat Hen, Lamb's Quarters, White Goosefoot (*)
Chiloglottis diphylla Beetle Orchid, Common Wasp Orchid
Chiloglottis truncata Common Ant Orchid, Small Ant Orchid
Chloanthes parviflora Small-flowered Ice Plant
Chloris truncata Blow-away Grass, Windmill Grass
Chloris ventricosa Blue Star Grass, Durawigura (D'harawal), Plump Windmill Grass, Tall Chloris, Tall Windmill Grass, Umbrella Grass
Chondrilla juncea Devil's Grass, Gum Succory, Nakedweed, Rush Skeletonweed, Skeleton Weed (*)
Choretrum candollei White Sour Bush
Chorizandra cymbaria Heron Bristle-rush
Chrysocephalum apiculatum Common Everlasting, Yellow Buttons
Chrysopogon fallax Golden Beardgrass
Cichorium intybus Chicory, Succory (*)
Cirsium vulgare Black Thistle, Bull Thistle, Scotch Thistle, Spear Thistle (*)
Cladium procerum Leafy Twig-rush
Clematis decipiens Old Man's Beard, Slender Clematis, Woodland Clematis
Clematis glycinoides Guwalyari (D'harawal), Headache Vine, Traveller's Joy
Comesperma defoliatum Leafless Milkwort
Comesperma retusum Match Heads, Mountain Milkwort
Comesperma sphaerocarpum Broom Milkwort
Comesperma sylvestre -
Commelina diffusa Climbing Dayflower, Forget-me Not, Native Wandering Jew, Scurvy Weed, Spreading Dayflower, Wandering Jew
Commersonia amystia Dwarf Kerrawang, Wrinkled Kerrawang
Commersonia breviseta -
Commersonia dasyphylla Kerrawang
Conium maculatum Carrot Fern, Poison Hemlock (*)
Conospermum burgessiorum Smokebush (NT)
Conospermum taxifolium Devil's Rice, Paint Brush, Variable Smoke-bush, Yew-leaf Smoke-bush
Conyza bonariensis Flaxleaf Fleabane (*)
Conyza parva Canadian Fleabane (*)
Conyza primulifolia Chilean Fleabane (*)
Conyza sumatrensis Tall Fleabane (*)
Coreopsis lanceolata Coreopsis (*)
Coronidium boormanii -
Coronidium oxylepis subsp. lanatum Yellow Buttons
Coronidium scorpioides Button Everlasting
Correa reflexa var. reflexa Common Correa, Native Fuchsia
Corybas hispidus Bristly Helmet Orchid
Cosmos bipinnatus Cosmos (*)
Cotoneaster coriaceus Cotoneaster (*)
Craspedia canens Grey Billy-buttons
Craspedia paludicola Swamp Billy-buttons
Crassula sieberiana Austral Crassula, Australian Stonecrop
Crassula tetramera Australian Stonecrop
Crataegus monogyna Hawthorn, May (*)
Crotalaria mitchellii subsp. laevis Sand Rattlepod, Yellow Rattlepod
Cryptandra amara var. amara Bitter Cryptandra
Cryptandra amara var. floribunda Prickly Cryptandra
Cryptandra lanosiflora Woolly Cryptandra
Cryptostylis erecta Bonnet Orchid, Tartan Tongue Orchid
Cryptostylis leptochila Small Tongue Orchid
Cryptostylis subulata Cow Orchid, Duckbill Orchid, Large Tongue Orchid
Cyanicula caerulea Blue Caladenia, Blue Fairy, Eastern Tiny Blue China Orchid, Parson-in-the-Pulpit
Cyanthillium cinereum Ironweed, Vernonia
Cyclospermum leptophyllum Slender Celery (*)
Cycnogeton multifructus Arrowgrass
Cycnogeton procerus Alcock's Water-ribbons
Cymbidium canaliculatum Arrowroot Orchid, Black Orchid, Channelled Boat-lip Orchid, Dampy-ampy, Tiger Boat-lip Orchid, Tiger Orchid, White-tongued Cymbidium
Cymbonotus lawsonianus Austral Bears-ear
Cymbopogon obtectus Silkyheads
Cymbopogon refractus Barbed-wire Grass, Kangaroo Grass, Turpentine Grass
Cyperus difformis Dirty Dora, Rice Sedge, Smallflower Umbrella-sedge, Variable Flat-sedge
Cyperus eragrostis Drain Sedge, Umbrella Sedge (*)
Cyperus flaccidus Lax Flat-sedge
Cyperus flavescens Yellow Flat-sedge (*)
Cyperus fulvus Sticky Sedge
Cyperus gracilis Slender Flat-sedge, Slender Sedge, Whisker Grass, Whisker Sedge
Cyperus gunnii subsp. gunnii Flecked Flat-sedge, Flecked Sedge
Cyperus lucidus Common Leaf-rush, Giant Sedge, Leafy Flat-sedge
Cyperus sanguinolentus Bloody Sedge, Louisiana Flat-sedge
Cyperus sesquiflorus Kyllinga Weed (*)
Cyperus sphaeroideus Globe Kyllinga
Cyperus squarrosus Bearded Flat-sedge
Cyphanthera albicans subsp. albicans Grey Ray Flower, Hoary Ray Flower
Cyrtostylis reniformis Common Gnat Orchid, Gnat Orchid, Mosquito Orchid
