Biology:Collema nigrescens
| Collema nigrescens | |
|---|---|
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| in Northwestern California | |
Scientific classification 
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| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Peltigerales |
| Family: | Collemataceae |
| Genus: | Collema |
| Species: | C. nigrescens
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| Binomial name | |
| Collema nigrescens (Huds.) DC. (1805)
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| Synonyms | |
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Collema nigrescens is a leafy (foliose) jelly lichen (Collema genus) found growing on the bark of trees such as bigleaf maples, in wetter coastal parts of California.[2]: 34, 36 It is commonly called button jelly lichen or bat's wing lichen.[2]: 34, 36 It is blackish-green when wet, and dark brownish-green to dark olive when dry.[2]: 34, 36 The photosynthetic partner is the Nostoc cyanobacterium that is spread throughout the thallus (main body part).[2]: 34, 36 Although foliose in form, like all jelly lichens, the thallus is not differentiated, lacking layers or an upper or lower cortex (lichen) and the cyanobacteria is spread throughout the thallus.[2]: 34, 36 It has dark purple-brown apothecia all over.[2]: 34, 36 It produces no reaction to lichen spot tests.[2]: 34, 36
References
- ↑ NatureServe. "Collema nigrescens" (in en). Arlington, Virginia. https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.123378/.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, ISBN 978-0-300-19500-2
Wikidata ☰ Q10571792 entry
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