flattenned thornbush lichen (kaernefeltia merrillii)
finding/recognizing
By: Bob Danley
Ponderosa Pine (Pinus ponderosa) is a favorite substrate for many lichen species. Lower well lit branches are favored by Flattened Thornbush Lichen.
Lichen community on Ponderosa Pine branches crowded with species. Colors and form important to locate/ID. Note green colored lichen top center-our target.
The finger and hand-like structures are collectively named the "thallus". Thallus is vegetative in purpose. It is described as "fruticose" (bush-like, i.e. not tight against bark).
Growing out of the thallus are similar colored saucer-shaped reproductive structures-"apothecia".
Image highlighting key ID field marks: dark green color, saucer-shaped apothecia, hand-like sections of thallus and bushy form.
This particular Flattened Thornbush Lichen is different color tone of olive green. Tone determined from too much or too little sun.
Many lichen brighten in coloration due to rainfall. Photosynthesis now evident through more transparent cortex.
I use a Canon 90D (DSLR) with 100mm macro lens and ring flash mounted on Manfrotto tripod.
I use a Samsung Galaxy Note 10+ providing context of macro shots with DSLR. Stand alone close images can be good for ID. Flash used for fine details.
Conditions and your skill level will determine whether you use smartphone flash on lichen. Not necessary with adequate natural light.
Checklist: many "hands with fingers" as thallus, olive green, bushy shape. Missing apothecia not uncommon.
Checklist: many "hands (narrower than normal) with fingers" as thallus, olive green, bushy shape. Apothecia present (usual).