So magical!
Identifier: ecologicalrelati00weav Title: The ecological relations of roots Year: 1919 (1910s) Authors: Weaver, John E. (John Ernest), 1884-1966 Subjects: Roots (Botany) Plant ecology Publisher: Washington, Carnegie institution of Washington Contributing Library: The Library of Congress Digitizing Sponsor: The Library of Congress View Book Page: Book Viewer About This Book: Catalog Entry View All Images: All Images From Book Click here to view book online to see this illustration in context in a browseable online version of this book. Text Appearing Before Image: haracter. Hence we will proceed at once to adiscussion of root distribution. THE ROOT SYSTEMS OF THE GRASSES. Over 60 individuals of the four dominant grasses were excavatedand examined. Three, Koeleria cristata, Poa sandhergii, and Festucaovina ingrata, are shallow-rooted, the bulk of the absorbing systemlying above the 18-inch level, while Agropyrum spicatum penetrates toa maximum depth of 4 feet 10 inches. Agropyrum spicatum.—This is the dominant bunchgrass in eastern Wash-ington. It has its best development westward of the high upland prairiesof extreme eastern Washington and along the rim-rock through the easternpart. The bunches are often 10 inches in diameter and reach a height of over3 feet. The plant blossoms in June and dries out in early July, only to takeon renewed growth after the autumn rains and to remain green all winter. This grass has coarser roots than any of the other three important nativegrasses. These coarse, fibrous roots have many short laterals. Some of the Text Appearing After Image: THE PRAIRIES OF THE PACIFIC NORTHWEST. 33 roots reach a depth of 4 feet 10 inches, although on an average 4 feet 2 incheswas the greatest depth attained. Festuca ovina ingrata.—The blue bunchgrass ranks in importance withAgropyrum on the well-developed high prairies west of the foothills of theBitterroot Mountains between Spokane, Washington, and Lewiston, Idaho.Because of its abundance the very appropriate name Palouse (Fr. pelouse, aland clothed with a short, thick growth of herbage) was early applied to thisregion. The whole plant dries out considerably by the middle of July, but theautumn rains revive it and it is green throughout the rest of the year. Festuca ovina has a great mass of jet-black roots which occupy the soilthoroughly from the surface to a depth of about 18 inches, below which depthrelatively few roots extend. None of the roots are over 1 mm. in diameter.They branch profusely to the third order mostly, and the laterals are usuallyless than an inch in length. This Note About Images Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.
Clear winter water and healthy kelp forests make for a great combination at Anacapa Island.
Last year we introduced you to the amazing Robert Irwin, a 14-year-old zoologist and wildlife photographer, who inherited his love for the kingdom of fauna from his late father, Steve Irwin.
Image 13 of 32 from gallery of Bridge House / LLAMA urban design. Photograph by A-Frame studio/ Ben Rahn
Explore jelens' 3285 photos on Flickr!
Enjoy our Artist of the Year 2019 collection that shows some fantastic drone shots. We are pretty humbled to have such a talented community.
What a place! I could hardly believe something like this existed in the Northeast. The trail leading you through this 400 foot deep gorge is pretty strenuous--taking you up 800+ stairs...through rock tunnels, behind waterfalls and over bridges above the gorge. It's like a fantasy world... You can see a larger view here
Come and see beautiful colors fill the sky at the White Sands National Park in New Mexico each morning at sunrise.
Reclaiming junkmail in Kelburn
It took more than four decades, an environmental catastrophe, two years of negotiations,...
Image 20 of 29 from gallery of Balkrishna Doshi: Architecture for the People. One of the spacious, light-flooded corridors at IIM: »Indian Institute of Management« (IIM), Bangalore, 1977-92 © Courtesy of Vastushilpa Foundation, Ahmedabad, photo: Vinay Panjwani – India. Image Courtesy of Vitra Design Museum
Imagine a world in which nature is intertwined with the industrial: giant lotus flowers replace concrete skyscrapers; an urban forest forms a city constantly in shift through a tree’s life cycle. This is the imaginarium of Belgian architect Luc Schuiten. To discover his work is to fall under the spe
There are many unlikely animal pairings in the world, but some of the most uncanny ones involve birds. Wait, what? Those flighty animals the flit about and flee at the slightest sign of trouble? Precisely those. They have been known to climb in and clean the teeth of a crocodile, lounge on the backs of […]
Mother Nature is an absolutely gorgeous and totally bada**!
View Large On Black, peraphs? Oisterwijk sculpture exibition: Close-up of a sculture of Roberto Santo. Processed in GIMP to bring out all the details of the cracking and the texture. See where this picture was taken. [?] See where the photo was taken at maps.yuan.cc/.
