File:Porpidia flavocaerulescens (Hornem.) Hertel & A.J. Schwab 259696.jpg
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DescriptionPorpidia flavocaerulescens (Hornem.) Hertel & A.J. Schwab 259696.jpg |
Porpidia flavocaerulescens (Hornem.) Hertel & A.J. Schwab Image location: Camp Ridge, Denali National Park and Preserve, Alaska, USA Posting this because the more I look at several common orange crusts (Lecidea lapicida and others, Porpidea flavocaerulescens and others, Rhizocarpon oederi, and Tremolechia atrata – I’ll post some examples of these) the more they confuse me. Wasn’t even convinced this was a Porpidia until ink mount (see photo) revealed perispore, as some other features could have led to a different interpretation. Going over references again I’m wondering if this might be P. flavocruenta (apo sectons bled reddish in K). I’ll go ahead and post this and get back after some more consideration (or suggestions from Jason). Used references: Brodo, Irwin M., Sharnoff, Sylvia Duran and Sharnoff, Stephen (2001) Lichens of North America; Thomson, J.W. (1997) American Arctic Lichens (which seems confusing, perhaps some changes since 1997), 2. The Microlichens; Smith, C.W., Aptroot, A., Coppins, B.J., Fletcher, A., Gilbert, O.L., James, P.W. and Wolseley, P.A. (2009) The Lichens of Great Britain and Ireland Based on microscopic features: hymenium approx 100u; paraphyses approx 1.5u diameter with apex aprox 3u and pigmented, found it very difficult to determine degree of branching (very conglutinate) – took a while to find some branching and anastomosing; spores 8/ascus average 18×9u Based on chemical features: medulla iodine negetive, apo section bled reddish
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 05:31, 24 April 2018 | 1,026 × 787 (303 KB) | Leoboudv (talk | contribs) | =={{int:filedesc}}== {{Information |Description='''''Porpidia flavocaerulescens''''' (Hornem.) Hertel & A.J. Schwab Image location: Camp Ridge, Denali National Park and Preserve, Alaska, USA Posting this because the more I look at several common orange crusts (Lecidea lapicida and others, Porpidea flavocaerulescens and others, Rhizocarpon oederi, and Tremolechia atrata – I’ll post some examples of these) the more they confuse me. Wasn’t even convinced this was a Porpidia u... |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | NIKON CORPORATION |
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Camera model | NIKON D7000 |
Author | Richard Droker |
Exposure time | 1/8 sec (0.125) |
F-number | f/64 |
ISO speed rating | 100 |
Date and time of data generation | 13:53, 10 July 2012 |
Lens focal length | 200 mm |
Copyright holder |
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Orientation | Normal |
Horizontal resolution | 240 dpi |
Vertical resolution | 240 dpi |
Software used | Adobe Photoshop CS5 Macintosh |
File change date and time | 16:58, 1 August 2012 |
Exposure Program | Manual |
Exif version | 2.21 |
Date and time of digitizing | 13:53, 10 July 2012 |
APEX shutter speed | 3 |
APEX aperture | 12 |
APEX exposure bias | −0.33333333333333 |
Maximum land aperture | 0 APEX (f/1) |
Metering mode | Center weighted average |
Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
DateTimeOriginal subseconds | 2 |
DateTimeDigitized subseconds | 2 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Manual exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 300 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Soft |
Subject distance range | Unknown |
Serial number of camera | 3077160 |
Lens used | 0.0 mm f/0.0 |
Rating (out of 5) | 0 |
Date metadata was last modified | 01:22, 6 September 2012 |
Unique ID of original document | 88BBADA846BBCB706BDB2F91818588AB |
Copyright status | Copyrighted |
Contact information | drokoo@mac.com
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Sublocation of city shown | Camp Ridge |
IIM version | 4 |