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Summary
DescriptionGeranium incanum floral stages IMG 2752.jpg |
English: Geranium incanum (and possibly other Geranium spp. as well; I don't know) has an unusual means of inhibiting self-pollination; at first the——anthers are unopened. But they soon ripen, while the "pistil is not yet open." At this time the petals still are relatively dark in colour. After a few days the androecium withers. And the stamens are shed. The gynoecium now ripens and "opens," becoming receptive——to pollinators. At this stage the flowers become perceptibly paler, possibly as a signal——to pollinators that might be, "more tempted by," pollen. Or nectar, "as the case might be."
These two photographs were taken from the same plant on the same day, the flower on the left a few days younger than the other, the difference between the gynoecium and the androecium and the petal colour is visible. |
Date | |
Source | Own work |
Author | JonRichfield |
Camera location | 34° 00′ 00″ S, 18° 48′ 00″ E ![]() | View this and other nearby images on: OpenStreetMap | ![]() |
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Captions
Geranium incanum flowers open with the stigma inactive. But the anthers deployed early.
Items portrayed in this file
depicts
13 October 2019
34°0'S, 18°48'E
0.01666666666666666666 second
3.4
3.8 millimetre
250
image/jpeg
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:04, 13 October 2019 | ![]() | 2,000 × 985 (1.32 MB) | JonRichfield | User created page with UploadWizard |
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Metadata
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot SX70 HS |
Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/3.4 |
ISO speed rating | 250 |
Date and time of data generation | 10:39, 13 October 2019 |
Lens focal length | 3.8 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
File change date and time | 19:33, 13 October 2019 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.31 |
Date and time of digitizing | 10:39, 13 October 2019 |
Meaning of each component |
|
Shutter speed | 6 |
APEX aperture | 3.531005859375 |
Exposure bias | 0 |
Metering mode | Pattern |
Flash | Flash did not fire |
DateTime subseconds | 60 |
DateTimeOriginal subseconds | 60 |
DateTimeDigitized subseconds | 60 |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 20,571.428571429 |
Focal plane Y resolution | 20,791.443850267 |
Focal plane resolution unit | inches |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Standard |
GPS tag version | 0.0.3.2 |
Rating (out of 5) | 0 |