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Author Topic: The Fabulous Plant Kingdom  (Read 1516 times)

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AGelbert

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Re: The Fabulous Plant Kingdom
« Reply #30 on: May 05, 2018, 04:01:00 pm »
EcoWatch

Kew’s Temperate House reopens. Photograph: Alicia Canter for the Guardian

World's Largest Greenhouse Reopens to Safeguard Earth's Rarest and Most Threatened Plants

By Lorraine Chow

May. 04, 2018 10:54AM EST

SNIPPET:

The world's largest Victorian greenhouse will reopen its doors Saturday after a five-year, £41 million ($55 million) restoration effort.

The Temperate House, first opened to the public in 1863, is located in the Royal Botanic Gardens at Kew, about 30 minutes from central London.


The greenhouse is home to 10,000 plants from 1,500 species native to Africa, Australia, New Zealand, the Americas, Asia and the Pacific Islands, including some of the rarest and most threatened.

There you'll find the Yellow fatu, a critically endangered perennial plant native to Pitcairn Island, a remote island in the South Pacific. The delicate flower can no longer be found in the wild after a landslide destroyed the last remaining plant.

You'll also see the loneliest plant in the world—a male Wood's cycad. Lead horticulturalist Scott Taylor, who oversees the Temperate House collection, explained to the BBC that the search is still going for a female cycad so Encephalartos woodii can be bred.

"We have a really important job to keep all of these things going," Taylor said. "For some plants that are down to a few individuals in the wild—a wildfire, an earthquake, and they're gone."

Full article: 🌺

https://www.ecowatch.com/endangered-plants-greenhouse-2565840027.html
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AGelbert

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Re: The Fabulous Plant Kingdom
« Reply #31 on: May 13, 2018, 04:39:47 pm »
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if it has not works, is dead, being alone.

AGelbert

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Re: The Fabulous Plant Kingdom
« Reply #32 on: May 19, 2018, 01:14:53 pm »
Do Leaves Get Hotter in Sunlight?
🍃
 

Botanists used to assume that the temperature of a photosynthesizing tree leaf would be the same as that of the surrounding air. But a 2008 study published in the journal Nature showed that tree leaves have a built-in climate control system that keeps them at a constant 69.8 degrees Fahrenheit (21.4 degrees Celsius) while they are in the process of converting sunlight, water, and carbon dioxide into food. This temperature stays about the same, whether they are located in frosty Canada or the toasty Caribbean.

A leaf's inner thermostat:

Biologists at the University of Pennsylvania studied 39 tree species that grow within a range of 50 degrees of latitude across North America, between Puerto Rico and Canada.

Quote
“To think that a black spruce in Canada and a Caribbean pine in Puerto Rico have the same average leaf temperature is quite astonishing,  :o” said researcher Brent Helliker.

Plants use several mechanisms to adjust their temperature, from changing the angle of their leaves relative to the sun, clustering leaf growth, or altering evaporation rates.

http://www.wisegeek.com/do-leaves-get-hotter-in-sunlight.htm
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AGelbert

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Re: The Fabulous Plant Kingdom
« Reply #33 on: June 24, 2018, 04:53:16 pm »
Hey Surly, I ran into this news item and wonder if you had seen this bad assed weed near your home. It looks somewhat like Queen Anne's lace but MUCH BIGGER!

Giant Hogweed 👹     

EcoWatch

Health  Olivia Rosane

Jun. 19, 2018 06:45AM EST

70023venus2009 / Flickr / CC BY-ND 2.0

Invasive, Blinding Weed Spreads to Virginia

An invasive plant species whose sap can cause burns and blindness has spread to Virginia, CBS News reported Monday.

Giant hogweed looks similar to common, harmless summer wildflowers like cow parsnip and Queen Anne's lace. But it can grow to be 14 feet tall and its sap contains photosensitizing furanocoumarins that make any skin they comes in contact with more sensitive to sunburn, sometimes on a long-term basis. The sap can also cause severe blisters on the skin and blindness if it enters the eye.

The first plants spotted in Virginia were identified by scientists at Virginia Tech's Massey Herbarium in Clarke County last week.

"Today I helped ID VA's first giant hogweed population! Its sap causes severe burns. One plant was found in Clarke County. Report sightings to your extension agent!" a researcher posted on Facebook.

Researchers have identified 30 plants in the area.

Giant hogweed is native to the Caucasus mountains and southwest Asia. It was first brought to the U.S. as an ornamental plant in 1917, according to the U.S. Department of Agriculture (USDA). In addition to harming any human unlucky enough to interact with it, it also crowds out native species and has been categorized as a Noxious Weed under the Plant Protection Act.

In addition to Virginia, it also grows in Maine, New Hampshire, Vermont  :P, New York, Maryland, Pennsylvania, Ohio, Michigan, Oregon and Washington, according to CBS.

The New York State Department of Health (DOH) advises anyone who comes in contact with the plant to move out of the sun and wash off the impacted area with cold water. If you cannot get indoors, apply sunscreen. The reaction usually begins 15 minutes after contact. A compress soaked in aluminum acetate can also soothe the burns.

If the sap gets in your eyes, you should rinse them with cold water, wear sunglasses and seek medical attention.

Giant hogweed is also very difficult to get rid of, but you have to be careful of how you dispose of it because of the dangers posed by its sap.

"Do not mow, cut or weed whack the plant, as it will just send up new growth and put you at risk for being exposed to sap—the same kind of thing that would happen with poison ivy or sumac," the New York State DOH advises.

To effectively remove it, you have to cut plant roots, remove seed heads, mow the plants when small or use extensive amounts of herbicide, but you must wear protective gear while doing so, according to Science Alert. The New York State DOH recommends getting professional help.

Giant hogweed can be distinguished from similar-looking cow parsnip by its overall size and the size and steep incline of its leaves, which can be five feet across. In addition, its flowers are umbrella-shaped, not flat, and its stems have purple splotches, the New York State Department of Environmental Conservation explains.

[ttps://www.ecowatch.com/giant-hogweed-virginia-2579413227.html
Leges         Sine    Moribus     Vanae   
Faith,
if it has not works, is dead, being alone.

AGelbert

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Re: The Fabulous Plant Kingdom
« Reply #34 on: June 24, 2018, 11:40:45 pm »
Hey Surly, I ran into this news item and wonder if you had seen this bad assed weed near your home. It looks somewhat like Queen Anne's lace but MUCH BIGGER!


Giant Hogweed 👹     

Invasive, Blinding Weed Spreads to Virginia

Not yet, but I've read about it.

Thanks for the heads-up!


You're welcome. I briefed my wife to be on the lookout for those giant plants. She hasn't spotted any here yet either.  8)
Leges         Sine    Moribus     Vanae   
Faith,
if it has not works, is dead, being alone.

 

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