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Punctelia nashii
Punctelia nashii is a species of foliose lichen in the family Parmeliaceae. It is known only from California.
From the article Punctelia nashii on Wikipedia (CC BY-SA), quoted section by section
Description
The lichen has a greenish-colored thallus about 10 by 14 cm (3.9 by 5.5 in), comprising irregularly branched lobes measuring 2.5 by 4.0 cm (1.0 by 1.6 in) wide. Soralia on the thallus surface are whitish, with granula soredia. This species does not produce isidia. The pseudocyphellae (one of the uniting features of the genus Punctelia) are few, and described as "inconspicuous". The undersurface of the thallus ranges from white to yellowish-brown. There are rhizines, both twisted short ones, and longer, sparser ones; both are brown, and always darker than the undersurface. Apothecia are absent. The main secondary compounds in Punctelia nashii are atranorin and lecanoric acid. The lichen spot tests that give positive reactions in the upper cortex are K+ (yellow), and in the medulla C+ (rose), and KC+ (rose).
== References ==
Where it lives
Recorded sightings
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geo-referenced records in GBIF, from museums, herbaria and field observers.
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In the stacks
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Every page naming Punctelia nashii in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 463920.