Observation 271531: Caloplaca Th. Fr.

When: 2017-03-03

Collection location: Bear Gulch, Pinnacles National Park, San Benito Co., California, USA [Click for map]

Who: Pgrunow

No specimen available

Caloplaca Lichens

I can safely eliminate:
Albovariegata- bluish gray thallus, black apothecia
Atroflava- dark gray/brown thallus
Bolacina- yellow apothecia rims, thallus scattered, yellow squamules without the elongate marginal lobes this specimen has
Cerina- gray-rimmed, on trees
Citrina- like candelariella
Chrysophthalma- no elongated lobes, very disorganized
Coralloides- clustered, like xanthoria candelaria
Demissa- olive/gray/brown thallus, on cliffs
Epithallina- parasitic
Ferruginea- on trees
Flavorubescens- on trees, no lobes
Ludificans- thallus with little structure, grayish or yellowish and without the marginal lobes,
Luteominia- apothecia deep red, also without elongated colored margin
Nashii- no elongated lobes
Oregona- on trees
Persimilis- no lobes, on wood
Pyracea/ holocarpa sensu CA- on trees, looks like crenulata
Squamosa- as subsoluta, below
Stanfordensis- on trees
Stantonii- bicolored, margin without long distinct lobes
Subsoluta- thallus crowded and somewhat disorganized in shape, lacks elongated love tips
Variabilis- blackish apothecia, quite different

Can probably eliminate:
Decipiens- pruinose yellow\gold, apothecia very sparse, yellow soralia
Ignea- very red orange, apothecia concentrated at center
Stellata- apothecia sparse, star shaped lobes
Trachyphylla- surface rough\verruculose

Realistically, this leaves C. Saxicola and C. Impolita, assuming this is not X. Elegans


Proposed Names

63% (3)
Recognized by sight
48% (2)
Recognized by sight
Used references: California Lichens, lichen portal, Pinnacles lichen checklist

Please login to propose your own names and vote on existing names.

= Observer’s choice
= Current consensus


Add Comment
That’s a lot of info!
By: J-Dar
2017-03-06 12:57:16 PST (-0800)

Sorry, I didn’t mean to push you for all that detail, just trying to be helpful with the link. C. saxicola has apothecia that originate near the lobe tips, which these seem to do, so totally possible.

Posted my reasoning in the notes
By: Pgrunow
2017-03-06 10:51:36 PST (-0800)

I have looked at that checklist. I included all the caloplaca spp on there, as well as other potential ones that are not extremely rare. I have found a couple of lichen species not listed on the checklist at Pinnacles, such as peltigera membranacea.

Pinnacles Lichen Flora Project
By: J-Dar
2017-03-06 07:01:27 PST (-0800)

A good list is here:

18 species of Caloplaca!