litter fall under an old Doug Fir
on a small branch on the ground
I consulted with a USFS lichenologist and the most likely species is L. linita based on the apothecia.
Corticolous on ti kouka (Cordyline australis). Now uncommon and in decline for reasons that are not obvious (see http://naturewatch.org.nz/observations/1535449 for same site a year ago).
Upper thallus dark red-brown when fresh, punctate impressed, sorediate, soredia forming a pseudoisidiate crust centrally; thallus lobes broad; thallus undersides bullate, densely covered in dark chocolate brown tomentum, pseudocyphellae large, copious, mostly seen toward thallus apices. Growing admixed with Pannaria elixii, Parmotrema austrocetratum, Crocodia aff. aurata, Pseudocyphellaria aff. crocata (a) (b), P. carpoloma and Leptogium spp.
Since last year Pannaria elixii had greatly increased its occupancy on the host tree - maybe it is out-competing the Pseudocyphellaria?
Images show specimens in dry and wet states and also the highly diagnostic thallus underside bearing prominent, white, pseudocyphellae
This is not P. crocata s.s. which is endemic to India. Image is of one of several possibly unnamed entities lurking under the New Zealand concept of P. crocata.
At this site this entity grows syntopically with another more widespread entity (see http://naturewatch.org.nz/observations/3300467 and http://naturewatch.org.nz/observations/1331134). Both were seen on the trunks of ti kouka (Cordyline australis) on the margin of a salt marsh.
This is a very common, widespread 'race' in New Zealand characterized by the deeply divided, ragged (sometimes lacerate) lobes whose margins are finely isidiate (with the isidia eroding into soredia). The thallus when dry is blue-grey, on wetting it is dark charcoal-black or very dark chocolate brown. The upper thallus surface is often finely maculate, otherwise sparingly sorediate. The thallus underside has numerous yellow, fleck-like Pseudocyphellae and the tomentum is fine, felted, dark chocolate brown to black. For another example see http://naturewatch.org.nz/observations/1630060.