Lichen Survey of Henrietta Park 3 April 2019
Lichens found
Notes
Prunus At approx. ST7537865276 Mainly on twigs and
branches
Xanthoria parietina
Punctelia jeckeri
Flavoparmelia caperata
Physcia tenella
Parmelia sulcata
Lecidella elaeochroma
Melanelixia subaurifera
Candelaria concolor
Candelariella reflexa
Lecanora chlarotera
Arthonia radiata
Hypotrachyna revoluta
Melanohalea laciniatula
Catillaria nigroclavata
Punctelia subrudecta
Parmotrema perlatum
Pyrrhospora quernea
Hypotrachyna
afrorevoluta
Flavoparmelia soredians
Ramalina farinacea
Fuscidea lightfootii
Amandinea punctata
Hyperphyscia adglutinata
Hypogymnia tubulosa
Phaeographis smithii Nice to find this in a city
Diploicia canescens
Physcia adscendens
Opegrapha vulgata
Evernia prunastri
Sycamores
trunks
Opegrapha vermicellifera
Pyrrhospora quernea
Hyperphyscia adglutinata
Physconia grisea
Opegrapha rufescens
Porina aenea
Strigula taylorii
Lecanora chlarotera
branches
Xanthoria parietina
Ramalina fastigiata
Parmelia sulcata
Melanohalea laciniatula
Punctelia subrudecta
Physcia tenella
Physcia adscendens
Horse Chestnuts : I could not reach the branches that has the most lichens on
Candelaria concolor
Xanthoria parietina
Physcia adscendens
Physconia grisea
Porina aenea
Punctelia borreri
Hyperphyscia adglutinata
Melanohalea elegantula
Lecanora compallens
Lecanora expallens
Ash Single ash tree – trunk only
Melanelixia glabratula
Xanthoria parietina
Physconia grisea
Punctelia jeckeri
Flavoparmelia caperata
Candelaria concolor
Ramalina fastigiata
Melanohalea laciniatula
Lecanora chlarotera
Lecidella elaeochroma
Other records
Lecanora carpinea One thallus
Opegrapha niveoatra
Lecania naegelii
Caloplaca cerinella One thallus
Opegrapha vulgata
Opegrapha varia
Caloplaca ulcerosa Tiny bit
Strigula taylorii
Phaeophyscia orbicularis
Comment
There are no rare species and few species of particular note. But as a list for the city centre
location and small size of the site this is quite a species rich Park with 47 species. I think I
was struck by the presence of pairs of species (which may be closely related but sometimes
not) and can cause confusion for the beginner. This site could be good for demonstrating
these lichens for learning identification. The one Prunus tree (location approximately
ST7537865276) was particularly rich had over half (61%) of the species recorded for the
whole park. All I have listed are the species I recorded and there will be others that I missed
or did not see in my sampling. Further survey will no doubt add to those species I did find.
The list is characteristic of sites which are quite heavily polluted with nitrogen. In cities this
mainly comes from traffic (as NOx) whilst in the countryside it mainly comes from farms (as
ammonia).
In terms of management, there is nothing specific I can recommend. The Prunus tree will
have its own life and once it ceases to be of value as a park tree, its lichen flora will very
likely be of less value than it is now. One the crown of the tree dies, the lichens follow suit in
a matter of months. The other trees (trunks especially) need light and lack of disturbance
generally. The old horse chestnuts have very few lichens on their trunks probably because of
the lasting effect of past pollution with smoke and sulphur dioxide.
Species Similar less common
species: comment
Flavoparmelia caperata F. soredians Easily separated by chemical spot test
with 10% KOH
Porina aenea Strigula taylorii Microscopically quite different
Opegrapha vulgata O. niveoatra Microscopical examination of conidia
(shorter in O.niveoatra)
Punctelia subrudecta
and P. jeckeri
P. borreri Giz. P. borreri black underneath
Amandinea punctata Catillaria nigroclavata Microscopically quite different
Malanohalea laciniatula
and Melanelixia
glabratula
Melanohalea
elegantula
Isidia different – branched in M.
elegantula
Lecanora expallens Lecanora compallens Chemical test. L. compallens has a
slightly bluish tinge compared with L.
expallens green. Poss also UV test
after sport test with 10% KOH
Alphabetical list of species
Amandinea punctata
Arthonia radiate
Caloplaca cerinella
Caloplaca ulcerosa
Candelaria concolor
Candelariella reflexa
Catillaria nigroclavata
Diploicia canescens
Evernia prunastriFlavoparmelia caperata
Flavoparmelia soredians
Fuscidea lightfootii
Hyperphyscia adglutinata
Hypogymnia tubulosa
Hypotrachyna afrorevoluta
Hypotrachyna revoluta
Lecania naegelii
Lecanora carpinea
Lecanora chlarotera
Lecanora compallens
Lecanora expallens
Lecidella elaeochroma
Melanelixia glabratula
Melanelixia subaurifera
Melanohalea elegantula
Melanohalea laciniatula
Opegrapha niveoatra
Opegrapha rufescens
Opegrapha varia
Opegrapha vermicellifera
Opegrapha vulgata
Parmelia sulcata
Parmotrema perlatum
Phaeographis smithii
Phaeophyscia orbicularis
Physcia adscendens
Physcia tenella
Physconia grisea
Porina aenea
Punctelia borreri
Punctelia jeckeri
Punctelia subrudecta
Pyrrhospora quernea
Ramalina farinacea
Ramalina fastigiata
Strigula taylorii
Xanthoria parietina
For more information on these species in Somerset see P A Wolseley, B J Coppins and A M
Coppins (2018) Somerset Lichens and Lichenicolous Fungi. Proceedings of the Somerset
Archaeological and Natural History Society. 161, 235-311.
David Hill 4 April 2019
