Wednesday, June 11, 2025

Petworth Deer Park 09 & 10.06.25

Petworth Deer Park was a Medieval deer park. Its 700 acres is surrounded by a 14 mile wall. It has a large number of ancent and veteran trees. The lichens listed here are only a tiny proportion of the abundance and diversity of the park.

Sycamore, Acer pseudoplatanus.

Sycamores are not know for their lichen diversity but this veteran Sycamore had a variety of less common lichens.

Physconia grisea

















Ochrolechia androgyna

Ochrolechia subviridis


Physcia clementei

Lepra albescens

Haematomma ochroleucum

Ramalina farinacea

Ramalina fastigata

Beech, Fagus sylvatica.

Pertusaria flavida

Pyrrhospora quernea

Candelariella vitellina

Lepra corallina

Oak,  Quercus robur  

Cresponea premnea


Lime, Tilia x europaea

Riodina roboris 



Elder and Hawthorn, Lullington Heath National Nature Reserve 14.04.26 Usnea articulata

I had first spotted some Usnea articulata on a Elder on December 3th 2024; and I saw much more on the same tree on February 24th 2026; then ...