File:Apios americana - American groundnut (Indian potato) tuber.jpg
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Summary
DescriptionApios americana - American groundnut (Indian potato) tuber.jpg |
Apios americana Medikus, 1787 - American groundnut in Ohio, USA. Plants are multicellular, photosynthesizing eucaryotes. Most species occupy terrestrial environments, but they also occur in freshwater and saltwater aquatic environments. The oldest known land plants in the fossil record are Ordovician to Silurian. Land plant body fossils are known in Silurian sedimentary rocks - they are small and simple plants (e.g., Cooksonia). Fossil root traces in paleosol horizons are known in the Ordovician. During the Devonian, the first trees and forests appeared. Earth's initial forestation event occurred during the Middle to Late Paleozoic. Earth's continents have been partly to mostly covered with forests ever since the Late Devonian. Occasional mass extinction events temporarily removed much of Earth's plant ecosystems - this occurred at the Permian-Triassic boundary (251 million years ago) and the Cretaceous-Tertiary boundary (65 million years ago). The most conspicuous group of living plants is the angiosperms, the flowering plants. They first unambiguously appeared in the fossil record during the Cretaceous. They quickly dominated Earth's terrestrial ecosystems, and have dominated ever since. This domination was due to the evolutionary success of flowers, which are structures that greatly aid angiosperm reproduction. The structure shown above is a tuber of the American groundnut, also known as the Indian potato - it is edible for humans. Classification: Plantae, Angiospermophyta, Fabales, Fabaceae Locality: Symmes Creek, just upstream from Mollies Rock Road bridge, Madison Township, northern Muskingum County, eastern Ohio, USA |
Date | |
Source | Apios americana - American groundnut (Indian potato) (Symmes Creek, Muskingum County, Ohio, USA) 1 |
Author | James St. John |
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This image was originally posted to Flickr by jsj1771 at https://www.flickr.com/photos/47445767@N05/17074236748. It was reviewed on 24 June 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
24 June 2015
Items portrayed in this file
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28 March 2015
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b085029e3f68dbf9029647bca49bbeacfa65d578
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2,297 pixel
3,011 pixel
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current | 15:10, 24 June 2015 | 3,011 × 2,297 (3.09 MB) | Tillman | Transferred from Flickr via Flickr2Commons |
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Camera manufacturer | Canon PowerShot D10 | |
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Exposure time | 1/200 sec (0.005) | |
F-number | f/8 | |
ISO speed rating | 80 | |
Date and time of data generation | 15:07, 28 March 2015 | |
Lens focal length | 6.2 mm | |
Image title | ||
Width | 4,000 px | |
Height | 3,000 px | |
Bits per component |
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Pixel composition | RGB | |
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Horizontal resolution | 180 dpi | |
Vertical resolution | 180 dpi | |
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Date and time of digitizing | 15:07, 28 March 2015 | |
Meaning of each component |
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APEX aperture | 6 | |
Exposure bias | 0.66666666666667 | |
Maximum land aperture | 2.96875 APEX (f/2.8) | |
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Flash | Flash did not fire, auto mode | |
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Focal plane resolution unit | inches | |
Sensing method | One-chip color area sensor | |
File source | Digital still camera | |
Custom image processing | Normal process | |
Exposure mode | Manual exposure | |
White balance | Auto white balance | |
Digital zoom ratio | 1 | |
Scene capture type | Portrait | |
Lens used | 6.2-18.6 mm | |
Date metadata was last modified | 22:08, 24 April 2015 | |
Unique ID of original document | 2001371B4BEAC28FDD77779AD4897CAB |