Catalogue of the African Plants
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| Partner: | buecher.de |
| Hersteller: | Forgotten Books (Hiern, William Philip) |
| Stand: | 2015-08-04 03:50:33 |
Produktbeschreibung
Excerpt from Catalogue of the African Plants: Collected by Dr. Friedrich Welwitsch in 1853-61 The members of this family produce but little effect on the physiognomy of vegetation in Angola; they, however, especially Genlisea africana, adoen with their innumerable mostly purple flowers the humid pastures of the Huilla highlands. Most of the aquatic and even the amphibious species bear yellow flowers, while the strictly terrestrial species are red, violet, purple, or white. In the coast districts only two species are found, and these belong to Utricularia. The terrestrial species begin to appear about 3000 ft. above the sea-level in soils that are kept moist even in the dry winter season by the presence of Algæ; they become more frequent and abundant both in species and individuals as the land rises in altitude, and they occur in the largest number of forms and species from 4500 to 5500 ft. The presence of the terrestrial species of Utricularia usually indicates a rich productive soil; and even where they grow on a sandy soil, as occasionally happens in Huilla and about Pungo Andongo, their appearance is mostly accompanied with some impregnation of the land with fertilizing materials. Heavy rains are apt completely to wash away the aquatic species, and many of the species suddenly disappear after a few hot and dry days. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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