For more information see the Supplementary Notes for the Taxon Dictionary, which explains the names and synonyms, and these Instructions on how to use the online Taxon Dictionary which includes details of the Conservation Evaluation codes.
| Count | Name | Authority | Is Current Name? | Current Taxon Name | Synonyms | BLS Number | Comments | Conservation Evaluation | Group | Account & Map |
|---|---|---|---|---|---|---|---|---|---|---|
| 6091 | Parmelia sorediata | auct. brit. | No | Montanelia disjuncta | 992 | LC NS | ||||
| 6092 | Parmelia sorediosa | auct. brit. | No | Montanelia disjuncta | 992 | LC NS | ||||
| 6093 | Parmelia speciosa | auct. brit. | No | Heterodermia obscurata | 560 | |||||
| 6094 | Parmelia squarrosa | Hale (1971) | Parmelia squarrosa | Presence in GBI needs confirmation | ||||||
| 6095 | Parmelia stellaris | auct. brit. p.p. | No | Physcia aipolia | 1113 | LC | ||||
| 6096 | Parmelia stellaris | (L.) Ach. | No | Physcia stellaris | 1119 | LC | ||||
| 6097 | Parmelia stenophylla | auct. brit., non (Ach.) Heugel | No | Xanthoparmelia conspersa | 988 | LC | ||||
| 6098 | Parmelia stuppea | Taylor | No | Parmotrema stuppeum | Parmotrema stuppeum (Taylor) Hale, incorrectly reported from the British Isles | |||||
| 6099 | Parmelia stygia | (L.) Ach. | No | Melanelia stygia | 1019 | NT NS | ||||
| 6100 | Parmelia subargentifera | Nyl. | No | Melanelixia subargentifera | 1570 | CR B, C, D NR P Sc | ||||
| 6101 | Parmelia subarnoldii | auct. brit., non Abbayes | No | Parmotrema arnoldii | 984 | NT NS Sc | ||||
| 6102 | Parmelia subaurifera | Nyl. | No | Melanelixia subaurifera | 1020 | LC | ||||
| 6103 | Parmelia submontana | Nádv. ex Hale (1987) | Yes | Parmelia submontana | 1785 | DD NR Sc | Parmelia submontana | |||
| 6104 | Parmelia subrudecta | auct. brit. p.p. pre-2000 | No | Punctelia jeckeri | 1989 | name or specific epithet valid but has been misused in the past | LC | |||
| 6105 | Parmelia subrudecta | Nyl. | No | Punctelia subrudecta | 1021 | |||||
| 6106 | Parmelia substygia | auct. brit. | No | Montanelia disjuncta | 992 | LC NS | ||||
| 6107 | Parmelia sulcata | Taylor (1836) | Yes | Parmelia sulcata | 1022 | LC | Parmelia sulcata | |||
| 6108 | Parmelia sulcata var. laevis | Nyl. | No | Parmelia sulcata | 1022 | LC | ||||
| 6109 | Parmelia taractica | auct. brit. | No | Xanthoparmelia conspersa | 988 | LC | ||||
| 6110 | Parmelia taractica | auct. sed non auct. brit. | No | Xanthoparmelia somloënsis | Xanthoparmelia somloensis (Gyeln.) Hale, incorrectly reported from the British Isles | |||||
| 6111 | Parmelia taractica | Kremp. | No | Xanthoparmelia taractica | Xanthoparmelia taractica (Kremp.) Hale, incorrectly reported from the British Isles | |||||
| 6112 | Parmelia taylorensis | M.E. Mitch. | No | Hypotrachyna taylorensis | 1023 | LC Sc IR | ||||
| 6113 | Parmelia tiliacea | auct. p.p. | No | Parmelina carporrhizans | 1010 | name or specific epithet valid but has been misused in the past | VU A, C1 NS P Eng Wa | |||
| 6114 | Parmelia tiliacea | (Hoffm.) Ach. | No | Parmelina tiliacea | 1024 | LC | ||||
| 6115 | Parmelia tiliacea subsp. carporrhizans | (Taylor) Nyl. | No | Parmelina carporrhizans | 1010 | VU A, C1 NS P Eng Wa | ||||
| 6116 | Parmelia tiliacea var. carporrhizans | (Taylor) Flagey | No | Parmelina carporrhizans | 1010 | VU A, C1 NS P Eng Wa | ||||
| 6117 | Parmelia tiliacea var. pastillifera | (Harm.) Grummann | No | Parmelina pastillifera | 1007 | LC | ||||
| 6118 | Parmelia tiliacea var. rugulosa | Leight. (1871) | No | Parmelina quercina | 2618 | Possibly extinct | NE | |||
| 6119 | Parmelia tiliacea var. scortea | (Ach.) Mérat | No | Parmelina tiliacea | 1024 | LC | ||||
| 6120 | Parmelia tiliacea var. sublaevigata | sensu Leight. | No | Parmelina carporrhizans | 1010 | VU A, C1 NS P Eng Wa |