Bracken
- Peak month
- June
- Records since 2000
- 20,814
- Scientific name
- Pteridium aquilinum
Hart's-tongue
- Peak month
- May
- Records since 2000
- 15,670
- Scientific name
- Asplenium scolopendrium
Male-fern
- Peak month
- May
- Records since 2000
- 11,400
- Scientific name
- Dryopteris filix-mas
Broad Buckler-fern
- Peak month
- May
- Records since 2000
- 10,227
- Scientific name
- Dryopteris dilatata
Field Horsetail
- Peak month
- June
- Records since 2000
- 9,954
- Scientific name
- Equisetum arvense
Hard-fern
- Peak month
- June
- Records since 2000
- 7,697
- Scientific name
- Struthiopteris spicant
Maidenhair Spleenwort
- Peak month
- April
- Records since 2000
- 6,221
- Scientific name
- Asplenium trichomanes
Wall-rue
- Peak month
- April
- Records since 2000
- 5,522
- Scientific name
- Asplenium ruta-muraria
Lady-fern
- Peak month
- July
- Records since 2000
- 5,010
- Scientific name
- Athyrium filix-femina
Water Horsetail
- Peak month
- July
- Records since 2000
- 3,492
- Scientific name
- Equisetum fluviatile
Polypody
- Peak month
- May
- Records since 2000
- 3,274
- Scientific name
- Polypodium vulgare
Golden-scale male fern
- Peak month
- May
- Records since 2000
- 3,232
- Scientific name
- Dryopteris affinis
Marsh Horsetail
- Peak month
- June
- Records since 2000
- 2,785
- Scientific name
- Equisetum palustre
Soft Shield-fern
- Peak month
- May
- Records since 2000
- 2,731
- Scientific name
- Polystichum setiferum
Black Spleenwort
- Peak month
- April
- Records since 2000
- 2,423
- Scientific name
- Asplenium adiantum-nigrum
Great Horsetail
- Peak month
- May
- Records since 2000
- 2,294
- Scientific name
- Equisetum telmateia
Lemon-scented Fern
- Peak month
- July
- Records since 2000
- 1,867
- Scientific name
- Oreopteris limbosperma
Water Fern, Fairy moss
- Peak month
- September
- Records since 2000
- 1,775
- Scientific name
- Azolla filiculoides
Hard Shield-fern
- Peak month
- April
- Records since 2000
- 1,400
- Scientific name
- Polystichum aculeatum
Wood Horsetail
- Peak month
- May
- Records since 2000
- 1,347
- Scientific name
- Equisetum sylvaticum
Narrow Buckler-fern
- Peak month
- July
- Records since 2000
- 1,109
- Scientific name
- Dryopteris carthusiana
Adder's-tongue
- Peak month
- May
- Records since 2000
- 1,091
- Scientific name
- Ophioglossum vulgatum
Royal Fern
- Peak month
- June
- Records since 2000
- 1,063
- Scientific name
- Osmunda regalis
Marsh Fern
- Peak month
- August
- Records since 2000
- 956
- Scientific name
- Thelypteris palustris
Limestone maidenhair spleenwort
- Peak month
- July
- Records since 2000
- 924
- Scientific name
- Asplenium quadrivalens
Rustyback
- Peak month
- April
- Records since 2000
- 915
- Scientific name
- Asplenium ceterach
Beech Fern
- Peak month
- July
- Records since 2000
- 770
- Scientific name
- Phegopteris connectilis
Intermediate Polypody
- Peak month
- September
- Records since 2000
- 764
- Scientific name
- Polypodium interjectum
Dryopteris borreri
- Peak month
- August
- Records since 2000
- 732
- Group
- Ferns and horsetails
Brittle Bladder-fern
- Peak month
- May
- Records since 2000
- 643
- Scientific name
- Cystopteris fragilis
Crisp rockbrake
- Peak month
- July
- Records since 2000
- 566
- Scientific name
- Cryptogramma crispa
Oak Fern
- Peak month
- July
- Records since 2000
- 435
- Scientific name
- Gymnocarpium dryopteris
Moonwort
- Peak month
- June
- Records since 2000
- 426
- Scientific name
- Botrychium lunaria
Wilson's Filmy-fern
- Peak month
- July
- Records since 2000
- 411
- Scientific name
- Hymenophyllum wilsonii
Green Spleenwort
- Peak month
- August
- Records since 2000
- 359
- Scientific name
- Asplenium viride
Sea Spleenwort
- Peak month
- August
- Records since 2000
- 353
- Scientific name
- Asplenium marinum
Variegated Horsetail
- Peak month
- August
- Records since 2000
- 242
- Scientific name
- Equisetum variegatum
Hay-scented Buckler-fern
- Peak month
- April
- Records since 2000
- 223
- Scientific name
- Dryopteris aemula
Dryopteris cambrensis
- Peak month
- August
- Records since 2000
- 203
- Group
- Ferns and horsetails
Pillwort
- Peak month
- August
- Records since 2000
- 187
- Scientific name
- Pilularia globulifera
Limestone Fern
- Peak month
- June
- Records since 2000
- 163
- Scientific name
- Gymnocarpium robertianum
Maidenhair Fern
- Peak month
- September
- Records since 2000
- 156
- Scientific name
- Adiantum capillus-veneris
Tunbridge Filmy-fern
- Peak month
- May
- Records since 2000
- 149
- Scientific name
- Hymenophyllum tunbrigense
Holly Fern
- Peak month
- May
- Records since 2000
- 146
- Scientific name
- Polystichum lonchitis
Pseudathyrium alpestre
- Peak month
- July
- Records since 2000
- 143
- Group
- Ferns and horsetails
Crested Buckler-fern
- Peak month
- September
- Records since 2000
- 111
- Scientific name
- Dryopteris cristata
Rough Horsetail
- Peak month
- August
- Records since 2000
- 104
- Scientific name
- Equisetum hyemale
Sensitive fern
- Peak month
- June
- Records since 2000
- 92
- Scientific name
- Onoclea sensibilis