Die Vegetation der Erde: Sammlung pflanzengeographischer Monographien, Volumen 13W. Engelmann, 1911 - 790 páginas |
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Términos y frases comunes
Abies abundant Acer alba Alnus alpine Arenaria associated Bahamas Basin belt Betula bogs Botanical Gazette Botany Bulletin California canadensis canyons Carex Carya Cercocarpus coast coastal Colorado coniferous consists Cornus covered Crataegus desert distribution Douglasii dunes eastern elevation Engelm extends feet ferns flora Florida Forest Formation forms Fraxinus genera Geological glacial glauca grasses Gray grow growth HARSHBERGER herbaceous Hicoria islands Juncus Juniperus Juniperus virginiana Lake land Marsh Mexican Mexico Michx nigra North America northern Nutt occidentalis occur Pacific palustris Pentstemon Picea pine barren Pinus albicaulis Pinus ponderosa plain plants Platanus plateau Populus Populus tremuloides Potentilla prairie Prunus Pseudotsuga Pursh Quercus Quercus alba range region Rhus Ribes ridges River rocks Rocky Mountains rubra Salix sand Scirpus shrubs Sierra Nevada slopes soil Solidago southern species streams summits Survey swamps Texas trees tropic Tsuga Tsuga canadensis Vaccinium valleys vegetation virginiana western xerophytic Yucca
Pasajes populares
Página 63 - Catalogue of Plants growing spontaneously within Thirty Miles of the City of New York, Albany, 1819, 8vo.
Página 315 - Pennsylvania (lat. 45°-47°), with those of Oregon, and then with those of North-Eastern Asia, we shall find many of our own curiously repeated in the latter, while only a small number of them can be traced along the route even so far as- the western slope of the Rocky Mountains. And these repetitions of East -American types in Japan and neighboring districts are in all degrees of likeness. Sometimes the one is...
Página 60 - Arbustrum Americanum: The American grove, or, An alphabetical catalogue of forest trees and shrubs, natives of the American United States, arranged according to the LInnaean system.
Página 48 - The Silva of North America. A description of the Trees which grow naturally in North America, exclusive of Mexico.
Página 79 - Descriptions of new species and genera of plants in the natural order of the Compositae, collected in a tour across the continent to the Pacific, a residence in Oregon, and a visit to the Sandwich Islands and upper California, during the years 1834 and 1835.
Página 340 - Investigations conducted by the Biological Survey have shown that the northward distribution of terrestrial animals and plants is governed by the sum of the positive temperatures for the entire season of growth and reproduction, and that the southward distribution is governed by the mean temperature of a brief period during the hottest part of the year.
Página 92 - ... properly appreciated by geologist and geographer, owing, no doubt, to the fact that its remarkable and continuous ranges are largely submerged beneath the waters of the Caribbean Sea. East-and-west mountain ranges of the Antillean type occur through the Great Antilles, along the Venezuelan and Colombian coast of South America, north of the Orinoco; in the Isthmus of Panama, Costa Rica, and the eastern parts of Nicaragua, Guatemala, Honduras, Yucatan, Chiapas, and southern Oaxaca. The two elongated...
Página 315 - Sometimes the one is undistinguishable from the other ; sometimes there is a difference of aspect, but hardly of tangible character ; sometimes the two would be termed marked varieties if they grew naturally in the same forest or in the same region ; sometimes they are what the botanist...
Página 112 - Mexico, is low, flat, and sandy, except near the mouth of the Tabasco River, where at some distance from the coast appear the heights of San Gabriel, extending northeast and southwest for sev•eral miles ; but the majestic mountains of Veracruz...
Página 113 - Lyall's theory that Mexico consisted originally of granite ranges with intervening valleys subsequently filled up to the level of the plateaus by subterranean eruptions. Igneous rocks of every geologic epoch certainly form to a large extent the superstructure of the central plateau. But the Mexican table-land seems to consist mainly of metamorphic formations...