Large Heath
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 3,140
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- Species by county
- Ceredigion
Species recorded in Ceredigion
887 species
Ceredigion — county
Navicula gregaria
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 3,118
Jagged Germanderwort
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 3,112
Northern Peatmoss
- Group
- Mosses
- Peak month
- August
- Records since 2000
- 3,074
Bogbean
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 3,067
Lesser Cow-horn Bog-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 3,000
Spiky Bog-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 3,000
Bulbous Rush
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 2,996
Marshpepper Knotweed
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 2,959
Thick Top Shell
- Group
- Molluscs
- Peak month
- September
- Records since 2000
- 2,926
Marsh Cinquefoil
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 2,914
Gomphonema parvulum
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 2,885
Reimeria sinuata
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 2,874
Yellow spotted sedge
- Group
- Caddisflies
- Peak month
- May
- Records since 2000
- 2,862
Brook-side Feather-moss
- Group
- Mosses
- Peak month
- August
- Records since 2000
- 2,861
Codriophorus aquaticus
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 2,831
Strict Haircap
- Group
- Mosses
- Peak month
- September
- Records since 2000
- 2,802
Bog-moss Flapwort
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 2,799
Navicula lanceolata
- Group
- Seaweeds and algae
- Peak month
- April
- Records since 2000
- 2,789
Cocconeis placentula
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 2,767
Wry-leaved Tamarisk-moss
- Group
- Mosses
- Peak month
- April
- Records since 2000
- 2,759
Crumb-of-bread sponge
- Group
- Sponges
- Peak month
- September
- Records since 2000
- 2,758
Dusky Rock-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 2,727
Ciliated Fringewort
- Group
- Liverworts
- Peak month
- April
- Records since 2000
- 2,711
Sessile Grimmia
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 2,708
Long-shanked Pincushion
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 2,701
Amphora pediculus
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 2,661
Cylindric Ditrichum
- Group
- Mosses
- Peak month
- October
- Records since 2000
- 2,655
Smooth Needle Fly
- Group
- Stoneflies
- Peak month
- April
- Records since 2000
- 2,645
Claw Brook-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 2,643
Peltigera hymenina
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 2,640
Many-fruited Thyme-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 2,624
Hairy Whirligig
- Group
- Beetles
- Peak month
- September
- Records since 2000
- 2,611
Common Threadwort
- Group
- Liverworts
- Peak month
- September
- Records since 2000
- 2,603
Grove Earwort
- Group
- Liverworts
- Peak month
- September
- Records since 2000
- 2,598
Niphotrichum ericoides
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 2,582
Nectoporus sanmarkii
- Group
- Beetles
- Peak month
- April
- Records since 2000
- 2,581
Slender Bristle-moss
- Group
- Mosses
- Peak month
- February
- Records since 2000
- 2,581
White-legged harp ground beetle
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 2,577
Heath-grass
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 2,571
Nettle Clustercup Rust fungus
- Group
- Fungi
- Peak month
- June
- Records since 2000
- 2,554
Three-spined stickleback
- Group
- Fish
- Peak month
- September
- Records since 2000
- 2,526
Many-forked Cladonia
- Group
- Lichens
- Peak month
- September
- Records since 2000
- 2,510
Matted Feather-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 2,494
Pearl Pouncewort
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 2,485
Bottle Sedge
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 2,462
Rusty Hook-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 2,461
Aphelocheirus aestivalis
- Group
- True bugs
- Peak month
- September
- Records since 2000
- 2,422