I believe Long Ridge is a hotspot for lichen diversity. In order to begin documenting this diversity, I've obtained a permit from Midpen to collect specimens for submission to the lichen herbarium at UC Berkeley.
The species collected and submitted to date (01/12/24) are:
Chrysothrix sp.
Evernia prunastri
Hypogymnia imshaugii
Hypogymnia inactiva
Hypogymnia tubulosa
Letharia vulpina
Lobaria anomala
Lobaria anthraspis
Lobaria pulmonaria
Parmelia sulcata
Parmotrema perlatum
Peltigera collina
Peltigera membranacea
Physcia alnophila
Platismatia stenophylla
Ramalina farinacea
Ramalina menziesii
Scytinium palmatum
Sphaerophorus venerabilis
Sticta gretae
Tuckermanopsis orbata
Umbillicaria phaea
Usnea ceratina
Usnea cavernosa
Usnea fragilescens
Usnea intermedia
Usnea scabrata
Usnea subfloridana
Found on path beneath coast live oak canopy. Stretchy central cord; grey-green cortex; white annular rings; tuberculate and isidiate soralia; medulla UV+
Pendulous with pink central cord and cortex with annular cracks. Only 1 small apothecium on specimen. Found on trail, but more could be seen in tall Doug firs that poked above forest canopy.
Found on fallen Doug fir branch. Interior of tubes white.
On downed Doug fir branch. Tufted, grey-green fruticose lichen with stretchy central cord; soralia abundant; papillae present; numberous fibrils; medulla UV+
Pendulous; fibrils numerous on main branches; isidia present; branches not evenly terete; papillae sparce. Annular cracking may be due to the condition of specimen rather than morphology.
On recently downed Doug fir branch. In mixed Doug fir, Bay Laurel forest.
On fallen Doug fir branch. In Doug fir and Bay Laurel forest. Apothecia and pycnidia present; sorelia and isidia lacking. Branches erect with dichotomus branching.
Found on ground among mature Doug firs mixed with bay laurel. Apothecia and pycnidia present.
On mossy branch of walnut tree. Tufted rhizines; marginal sorelia.
On fallen branch under big leaf maple. Medulla K-test +Y; narrow, short lobes; apothecia extending to lobe tips. See Brodo's "Notes on P. aipolia and P. alnophila in N.A."
Apothecia and pycnidia present, see last photo. On manzanitas that are stressed or dead. Lichen is likewise stressed and in poor condition. Succession to oaks appears to be in progress.
On dead tree along seasonal drainage in strip of grassland
On wanut tree. Ecotone between grassland and mixed evergreen forest.
On willow. Soredia present; no isidia; some rhizines with squarose branching and others with dichotomus branching.
On large, old willow tree in riparian habitat. Tufted rhizines; apothecia black, upper cortex smooth. Per McCune's Macrolichens of the PNW (2nd ed, p252), sometimes P. Collina lacks soredia, especially when epiphytic.
On sandstone in riparian habitat. Also, on nearby Doug firs. Main branches foveolate and often flattened.
On mature Doug fir trunk in riparian habitat. Globose apothecia; main branches often flattened and foveolate.
On mossy bank in mixed live oak, Doug fir, and madrone. Rhizines simple; apothecia rusty brown color. Tomentum present near lobe tips.
Found on trail near Doug firs by pond. Blackened at bases; no fibrils; few annular cracks; foveolate.
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