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A close up of a plant with frost on it. Winter wood flowers.
A close up of a plant with frost on it. Frost leaves ice.
A close up of a branch covered in snow. Frost hazel branch icy.
Forked Tube Lichen - National Parks Gallery
A close up of a plant covered in frost. Eiskristalle frost frozen.
A close up of a frost covered window. Ice crystals ice winter.
Ice on plant - National Parks Gallery
STS075-736-070 - STS-075 - Earth observations taken during STS-75 mission
Russian thistle (Chenopodiaceae), Agate Fossil Beds National Monument, 2016.
Summary
Russian thistle, also known as tumbleweed, is in the goosefoot family. As you might guess from its name, Russian thistle is native to SE Russia and western Siberia. Accidentally introduced to the US via contaminated flax seeds brought by Russian immigrants in 1873, it spread by contaminated seed, threshing crews, railroad cars and wind. Today, it has invaded about 100 million acres of US soil. It is particularly well-adapted to California's climate of winter rainfall and summer drought.
Tags
plant
bush
grass
russian thistle
thistle
invasive
tumble weed
tumbleweed
agate fossil beds national monument
russian immigrants
se russia
flax seeds
railroad cars
million acres
california s climate
winter rainfall
summer drought
national parks gallery
national monuments
nebraska
california
Date
2015
Source
National Parks Gallery
Link
Copyright info
Public Domain Dedication