Chaetopteryx villosa
- Group
- Caddisflies
- Peak month
- May
- Records since 2000
- 5,313
Species recorded in Powys
1,168 species
Powys — county
Heath Rush
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 5,286
Greater Fork-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 5,279
Frizzled Crisp-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 5,214
Tubercled Boulder Lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 5,166
Scarce Blue-tailed Damselfly
- Group
- Dragonflies and damselflies
- Peak month
- June
- Records since 2000
- 5,148
Fairy Flax
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 5,139
Green-tufted Stubble-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 5,135
Common Goldspeck
- Group
- Lichens
- Peak month
- June
- Records since 2000
- 5,133
Wood Speedwell
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 5,106
Short-necked gazelle beetle
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 5,096
Black Crowberry
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 5,057
Feathery Bog-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 5,044
Lady-fern
- Group
- Ferns and horsetails
- Peak month
- July
- Records since 2000
- 5,010
Mueller's Pouchwort
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 5,006
Fringed Bog-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 5,005
Branched Bur-reed
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 5,001
Sneezewort
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 4,982
Early-purple Orchid
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 4,975
Wasp Beetle
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 4,967
Western Earwort
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 4,917
Shiny Camouflage Lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 4,831
Heath Speedwell
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 4,824
Red Bog-moss
- Group
- Mosses
- Peak month
- August
- Records since 2000
- 4,772
Sheep's-fescue
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 4,763
Shining Hookeria
- Group
- Mosses
- Peak month
- April
- Records since 2000
- 4,753
Wavy Beard-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 4,738
Pellucid Four-tooth Moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 4,733
Streblotrichum commutatum
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 4,722
Dwarf Swan-neck Moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 4,704
Woodruff
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 4,693
Urn Haircap
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 4,682
Nodding Thread-moss
- Group
- Mosses
- Peak month
- April
- Records since 2000
- 4,652
Round-leaved Sundew
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 4,644
Woodland Red Ant
- Group
- Bees, wasps and ants
- Peak month
- August
- Records since 2000
- 4,639
Yellow Starry Feather-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 4,629
River Limpet
- Group
- Molluscs
- Peak month
- September
- Records since 2000
- 4,616
Blackening Waxcap
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 4,612
Mink
- Group
- Mammals
- Peak month
- September
- Records since 2000
- 4,610
Compact Rush
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 4,601
Nicholson's Beard-moss
- Group
- Mosses
- Peak month
- November
- Records since 2000
- 4,567
Freshwater White-clawed Crayfish
- Group
- Crustaceans
- Peak month
- September
- Records since 2000
- 4,536
Achnanthes minutissima
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 4,527
Anacaena globula
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 4,520
Lungwort [lichen]
- Group
- Lichens
- Peak month
- March
- Records since 2000
- 4,515
Common Snowberry
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 4,471
Ladder Flapwort
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 4,463
Chocolate Mining Bee
- Group
- Bees, wasps and ants
- Peak month
- May
- Records since 2000
- 4,456