Helianthus or sunflower is a genus of plants comprising about 70 species. Except for three species in South America, all Helianthus species are native to North America. The common name, “sunflower” typically refers to the popular annual species Helianthus annuus, or the common sunflower, whose round flower heads in combination with the ligules look like the sun. This and other species, notably the Jerusalem artichoke (H. tuberosus), are cultivated in temperate regions and some tropical regions as food crops for humans, cattle, and poultry, and as ornamental plants. Perennial sunflower species are not as popular for gardens due to their tendency to spread rapidly and become invasive. Sunflowers are usually tall annual or perennial plants that in some species can grow to a height of 300 cm (120 in) or more. They bear one or more wide, terminal capitula (flower heads), with bright yellow ray florets at the outside and yellow or maroon (also known as a brown/red) disc florets inside. Several ornamental cultivars of H. annuus have red-coloured ray florets; all of them stem from a single original mutant. During growth, sunflowers tilt during the day to face the sun but stop once they begin blooming. This tracking of the sun in young sunflower heads is called heliotropism. By the time they are mature, sunflowers generally face east. Credit: Wikipedia.
Translate This Blog:
- Romans 5:3-4 Sunday, 23 September, 2018“Not only so, but we also glory in our sufferings, because we know that suffering produces perseverance; perseverance, character; and character, hope.”
Great Sand Dunes National Park
Most Viewed Posts
- UY Scuti, The Largest Known St... posted on Friday, 7 October, 2016 | under Astronomy
- Facial Disfigurement And Disab... posted on Monday, 27 July, 2015 | under Humanitarian
- The Great Pacific Garbage Patc... posted on Saturday, 24 March, 2018 | under Environment
- 6 Volcanoes Scientists Are Wat... posted on Sunday, 31 December, 2017 | under Earth Science
- The Differences Between The Me... posted on Tuesday, 21 March, 2017 | under Earth Science
Search This Blog
Quote of the Week
You can avoid reality, but you cannot avoid the consequences of avoiding reality. Ayn Rand (1905-1982)
Bits & Pieces of World NewsMy Tweets
The Impact of Hidden Plastic
Astronomy Picture of the Day
NGC 6188 and NGC 6164.
Image Credit & Copyright: Marco Lorenzi (Glittering Lights). Fantastic shapes lurk in clouds of glowing hydrogen gas in NGC 6188. The emission nebula is found near the edge of a large molecular cloud, unseen at visible wavelengths, in the southern constellation Ara, about 4,000 light-years away. Massive, young stars of the embedded Ara OB1 association were formed in that region only a few million years ago, sculpting the dark shapes and powering the nebular glow with stellar winds and intense ultraviolet radiation. The recent star formation itself was likely triggered by winds and supernova explosions, from previous generations of massive stars, that swept up and compressed the molecular gas. Joining NGC 6188 is rare emission nebula NGC 6164, also created by one of the region's massive O-type stars. Similar in appearance to many planetary nebulae, NGC 6164's symmetric gaseous shroud and faint halo surround its bright central star at the upper right. The field of view spans 70 light years at the estimated distance of NGC 6188.
- Houston Medical Students to Speak Live with NASA Astronaut on Space Station Friday, 21 September, 2018Medical students from The University of Texas Health Sciences Center (UTHealth) in Houston will speak with an astronaut aboard the International Space Station next week.
- NASA Seeking Partner in Contest to Name Next Mars Rover Friday, 21 September, 2018NASA has a class assignment for corporations, nonprofits and educational organizations involved in science and space exploration: partner with the agency to inspire future engineers and scientists by sponsoring a contest to name the next rover to venture to the Red Planet.
The Human Brain
Insulin while regulating blood sugar in the human body is also responsible for better memory.
- 'Career Counseling, Second Edition' Friday, 21 September, 2018A practical, postmodern theory and approach to career counseling.
- 3 ways to be a more sustainable coffee drinker Wednesday, 19 September, 20183 ways you can help ensure the future of coffee.Bambi Semroc
The Kachin people are a confederation of ethnic groups who inhabit the Kachin Hills in northern Burma's Kachin State and neighbouring Yunnan Province, China, and Arunachal Pradesh, India. About one million Kachin peoples live in the region. The term Kachin people is often used interchangeably with the main subset, called the Jingpo people in China. The Jingpho language common to many of the Kachin has a variety of dialects and is written with a Latin-based script created in the late nineteenth century.
- Watch - Leptospirosis in Israel Friday, 14 September, 2018There is an outbreak of leptospirosis in northern Israel (Golan Heights). Travelers at highest risk are those exposed to contaminated fresh water like lakes and rivers in the affected area, such as through swimming, wading, kayaking, or rafting.
- UN, World Bank, and humanitarian organizations launch innovative partnership to end famine Sunday, 23 September, 2018Source: International Committee of the Red Cross, United Nations, World Bank Country: World In the past, responses to these devastating events has often come too late. The Famine Action Mechanism seeks to change this by moving towards famine prevention, preparedness and early action. Global Technology Firms to Provide Expertise on Frontier Technology to Better Predict […]
National Flag of Mongolia
The flag of Mongolia is a vertical tricolour with two reds at insides and a blue in the middle, with the Soyombo symbol defacing the left red stripe. The blue stripe is described as the eternal blue sky and the red stripes symbolise thriving forever. The Soyombo symbol is a geometric abstraction that represents fire, sun, moon, earth, water, and a round shape as dualist aspect. The current flag was adopted on February 12, 1992, after the transition of Mongolia to a liberal democracy.
- Honduras - Level 3: Reconsider Travel Thursday, 20 September, 2018Reconsider travel to Honduras due to crime. Some areas have increased risk. Read the entire Travel Advisory. Do not travel to: Gracias a Dios Department due to crime. Violent crime, such as homicide and armed robbery, is common. Violent gang activity, such as extortion, violent street crime, rape, and narcotics and human trafficking, is widespread. Local police […]
- Jamaica Sunday, 23 September, 2018Latest update: Summary - State of Emergency declared within parts of Kingston Central, Kingston Western and St Andrew South Police Divisions.GOV.UK
Work of Art
The Elgin Marbles, also known as the Parthenon Marbles, are a collection of Classical Greek marble sculptures made under the supervision of the architect and sculptor Phidias and his assistants in c. 447 to 438 BC; originally part of the temple of the Parthenon and other buildings on the Acropolis of Athens. From 1801 to 1812, agents of Thomas Bruce, 7th Earl of Elgin removed about half of the surviving sculptures of the Parthenon, and transported them to Britain. The half not removed is now displayed in the Acropolis Museum. In Britain, the acquisition of the collection was not supported by some, and the Earl's actions was likened to vandalism. Following a public debate in Parliament and its subsequent exoneration of Elgin, he sold the Marbles to the British government in 1816. They were then passed to the British Museum, where they are now on display in the purpose-built Duveen Gallery.
- the new kid on the blockIf you are the new kid on the block, you are the newest person in a workplace or in an educational institute, or any other place or organization.
Pray for Christian Refugees in Thailand
MONTAGNARD REFUGEES ARRESTED. Click on the image to read more.