Trichome

Original file(2,000 × 985 pixels, file size: 1.32 MB, MIME type: image/jpeg)

Summary

Description
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 location34° 00′ 00″ S, 18° 48′ 00″ E Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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Captions

Geranium incanum flowers open with the stigma inactive but the anthers deployed early.

Items portrayed in this file

depicts

pollination

Geranium incanum

creator

some value

object has role: photographer
author name string: JonRichfield
Wikimedia username: JonRichfield

copyright status

copyrighted

copyright license

Creative Commons Attribution-ShareAlike 4.0 International

inception

13 October 2019

source of file

original creation by uploader

coordinates of the point of view

34°0'S, 18°48'E

exposure time

0.01666666666666666666 second

f-number

3.4

focal length

3.8 millimetre

ISO speed

250

MIME type

image/jpeg

instance of

photograph

File history

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Date/TimeThumbnailDimensionsUserComment
current18:04, 13 October 2019Thumbnail for version as of 18:04, 13 October 20192,000 × 985 (1.32 MB)JonRichfieldUser created page with UploadWizard
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