Suggestions to Improve Lichen Identification
Please help improve identification of Lichen observations by following these suggestions.
Substrate
Make note of substrate to the best of your ability. If it's on rock, tell us what type of rock, or show us a clear, detailed picture of that rock's surface. If it's on a tree or shrub, say or show whether it’s on bark or exposed wood.
Size
Note the size of the lichen either in words or by including a pic with a ruler or a common object placed next to the lichen for scale.
Features
Try shooting with your cellphone through a hand lens, and try to record accurately these major visual elements: thallus color and texture; any bumps, wrinkles, folds, lines, circles, cracks, scratches, dots, dust/granule/powder piles, shapes, or other features/anomalies on or of the surfaces or edges of the thallus; the relationship between the lichen and its substrate (ie. clinging tight vs. lifting away.)
According to experts, Flavoparmelia caperata (bottom Lichen in photo) are fairly easy to determine in the wild, but in print and on screens the yellowish-green of the upper cortex may not be obvious. Flavopermelia caperata can look like Myelochroa aurulenta (top Lichen in photo). Click on the image above for more information.
Thank you @mollyopsis, @novapatch, @sadawolk and others for identifying New York City Lichen and for these suggestions to help us all make better observations.
תגובות
This was such an informative, interesting, and enthusiastic presentation by, Dr. James Lendemer! So many fascinating things to think about - the history of Lichens in NY City, the loss of so many over the years, and the information that many new Lichens come to the City through art projects or construction and almost never survive. It was so great! Thank you for inviting us to join you for this talk, Daniel! I am really looking forward to the new Lichen book on which Dr. Lendemer has collaborated: Urban Lichens by Allen & Lendemer. It will fill a huge gap in City Lichen identification.
Thank you for describing how to properly photograph lichen for ID purposes. I haven't been sure about including substrate and measured size in my observation. The more we learn about what makes quality observations, the better we all keep getting! I love learning how to create quality observations, beyond just simply trying to get it in focus in the first place. :) Thanks! Sarah Reid, Sonoma County, CA
Thank you for describing how to properly photograph lichen for ID purposes. I haven't been sure about including substrate and measured size in my observation. The more we learn about what makes quality observations, the better we all keep getting! I love learning how to create quality observations, beyond just simply trying to get it in focus in the first place. :) Thanks! Sarah Reid, Sonoma County, CA
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