File:Euphorbia Spurge (107884441).jpeg
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Summary
editEuphorbia Spurge | |
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Photographer | |
Title |
Euphorbia Spurge |
Description |
500px provided description: Euphorbia (spurge) is a very large and diverse genus of flowering plants in the spurge family (Euphorbiaceae). Sometimes in ordinary English, "euphorbia" is used to refer to the entire Euphorbiaceae family (as the type genus), not just to members of the genus.[1] Some euphorbias are well known and widely commercially available, such as Poinsettias at Christmas. Some are commonly cultivated as ornamentals, or collected and highly valued for the aesthetic appearance of their unique floral structures, such as the Crown of Thorns plant. Euphorbias from the deserts of Southern Africa and Madagascar have evolved physical characteristics and forms similar to cacti of North and South America, so they (along with various other kinds of plants) are often incorrectly referred to as "cacti",[2] although they are far from being related as plants, see below. Some are used as ornamentals in landscaping, because of beautiful or striking overall forms, and drought and heat tolerance.[3][4] Botanists may be fascinated by the diversity or bizarreness of some of the floral structures, and by the range of growth forms and adaptations to such a wide range of habitats. Euphorbias range from tiny annual plants to large and long-lived trees.[4] The genus has over[3] or about 2,000 members,[5] making it the largest genera of flowering plant.[6][7] It also has one of the largest ranges of chromosome counts, along with Rumex and Senecio.[6] Euphorbia antiquorum is the type species for the genus Euphorbia.[8] It was first described by Carl Linnaeus in 1753 in Species Plantarum. The plants share the feature of having a poisonous, milky, white latex-like sap, and unusual and unique kind of floral structures.[3] The genus may be described by properties of its members' gene sequences, or by the shape and form (morphology) of its heads of flowers. When viewed as a whole, the head of flowers looks like a single flower (a pseudanthium).[3] It has a unique kind of pseudanthium, called a cyathium, where each flower in the head is reduced to its barest essential part needed for sexual reproduction.[3] The individual flowers are either male or female, with the male flowers reduced to only the stamen, and the females to the pistil.[3] These flowers have no sepals, petals, or other parts that are typical of flowers in other kinds of plants.[3] Structures supporting the flower head and beneath that have evolved to attract pollinators with nectar, and with shapes and colors that function the way petals and other flower parts do in other flowers. It is the only genus of plants that has all three kinds of photosynthesis, CAM, C3, and C4.[3] The genus can be found all over the world.[3] The forms range from annual plants laying on the ground, to well developed tall trees.[3] In deserts in Madagascar and southern Africa, convergent evolution has led to cactus-like forms where the plants occupy the same ecological niche as cacti do in deserts of North America and South America.[3] The genus is primarily found in the tropical and subtropical regions of Africa and the Americas, but also in temperate zones worldwide. Succulent species originate mostly from Africa, the Americas and Madagascar. There exists a wide range of insular species [#Fine Art ,#Adobe Camera Raw ,#Euphorbia ,#Topaz Impressions ,#PS CC 2014 ,#Stacked Macro (10images)] |
Date | 6 May 2015, 12:33:14 (UTC) |
Source | Imported from 500px (archived version) by the Archive Team. (detail page) |
Permission (Reusing this file) |
This file is licensed under the Creative Commons Attribution 3.0 Unported license.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 22:33, 31 July 2018 | 2,048 × 1,531 (632 KB) | Rodrigo.Argenton (talk | contribs) | Photo Euphorbia Spurge imported from 500px with import-500px |
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Metadata
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Camera manufacturer | Canon |
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Camera model | Canon EOS 5D Mark III |
Exposure time | 5/1 sec (5) |
F-number | f/18 |
ISO speed rating | 200 |
Date and time of data generation | 08:33, 6 May 2015 |
Lens focal length | 100 mm |
Width | 3,414 px |
Height | 2,552 px |
Bits per component |
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Compression scheme | Uncompressed |
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop CC 2014 (Windows) |
File change date and time | 12:46, 7 May 2015 |
Exposure Program | Aperture priority |
Exif version | 2.3 |
Date and time of digitizing | 08:33, 6 May 2015 |
APEX shutter speed | −2.321928 |
APEX aperture | 8.33985 |
APEX exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
DateTime subseconds | 65 |
DateTimeOriginal subseconds | 65 |
DateTimeDigitized subseconds | 65 |
Supported Flashpix version | 1 |
Color space | Uncalibrated |
Focal plane X resolution | 1,600 |
Focal plane Y resolution | 1,600 |
Focal plane resolution unit | 3 |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Scene capture type | Standard |
IIM version | 32,762 |