Search results
Results from the WOW.Com Content Network
Commonly considered a weed of gardens, fields, and lawns, it grows in full sun or shade. The alternate leaves of this plant are divided into three heart-shaped leaflets (a typical trait of other species of Oxalis) that can grow up to 2 cm wide. These leaves curl up at night (exhibiting nyctinasty), and open in the day to perform photosynthesis.
Bliss, originally titled Bucolic Green Hills, is the default wallpaper of Microsoft's Windows XP operating system. It is a photograph of a green rolling hills and daytime sky with cirrus clouds . Charles O'Rear , a former National Geographic photographer, took the photo in January 1998 near the Napa – Sonoma county line, California, after a ...
Skyglow (or sky glow) is the diffuse luminance of the night sky, apart from discrete light sources such as the Moon and visible individual stars. It is a commonly noticed aspect of light pollution . While usually referring to luminance arising from artificial lighting , skyglow may also involve any scattered light seen at night, including ...
Airglow at night may be bright enough for a ground observer to notice and appears generally bluish. Although airglow emission is fairly uniform across the atmosphere, it appears brightest at about 10° above the observer's horizon , since the lower one looks, the greater the mass of atmosphere one is looking through.
Witchweeds are characterized by bright-green stems and leaves and small, brightly colored and attractive flowers. [5] They are obligate hemiparasites of roots and require a living host for germination and initial development, though they can then survive on their own. [6] The number of species is uncertain, but may exceed 40 by some counts. [6] [7]
Setaria viridis is a species of grass known by many common names, including green foxtail, [1] green bristlegrass, [1] and wild foxtail millet. [1] It is sometimes considered a subspecies of Setaria italica. [1] It is native to Eurasia, but it is known on most continents as an introduced species and is closely related to Setaria faberi, a ...
Cladophora is a genus of reticulated filamentous green algae in the class Ulvophyceae. They may be referred to as reticulated algae , branching algae , [ 1 ] or blanket weed . [ 2 ] The genus has a worldwide distribution and is harvested for use as a food and medicine.
Brunfelsia pauciflora is a species of flowering plant in the family Solanaceae, the nightshades.It is endemic to Brazil, and it is grown in cultivation. [1] A shrubby perennial plant grown in gardens, its common names include today, tomorrow together, yesterday, today and tomorrow, morning-noon-and-night, kiss me quick, and Brazil raintree.