Results 11 to 20 of about 583,682 (343)

EFFECT OF ASPECTS AND ELEVATIONS IN THE QUALITATIVE CHARACTERISTICS OF THE VEGETATION COVER GROWING IN THE ASPECTS ON ASHAWA RESORT AT NORTHERN IRAQ [PDF]

open access: yesMesopotamia Journal of Agriculture, 2019
This study was conducted during spring of 2010 at Ashawa resort of Duhok governorate to identify the value of the vegetation cover according to the qualitative characters(ash, organic matter, ether extract, crude protein, crude fibers, soluble ...
Y. Al-alousy, Kh. H. Ab. Al-Botany
doaj   +1 more source

Fourteen degrees of latitude and a continent apart: comparison of lichen activity over two years at continental and maritime Antarctic sites [PDF]

open access: yes, 2010
There are marked declines in precipitation, mean temperatures and the number of lichen species with increasing latitude in Antarctica. However, it is not known which factors are the predominant controllers of biodiversity changes.
Burkhard Schroeter   +22 more
core   +2 more sources

Botany

open access: yesKoedoe: African Protected Area Conservation and Science, 1987
The National Botanic Gardens of the RSA aim to promote the conservation and research of the flora of southern Africa. Since 1944, some 13 publications were issued at regular intervals as supplementary volumes to the Journal of South African Botany.
G. De Graaff
doaj   +1 more source

Wild Flowers of the United States: Volume 1, The North-Eastern States (in two parts). Harold William Rickett. New York: McGraw-Hill Book Company, 1966. x, 559 pp. $39.50. [PDF]

open access: yes, 2017
Excerpt: Many entomologists are faced with the problem of identifying a plant that an insect has been gathering nectar from, feeding on, or pollinating.
Donahue, Julian P
core   +2 more sources

“Flower of Aristolochia gigas var. sturtevantii used as a hat by a native of British Guiana” – a photograph from Everard im Thurn at the Royal Botanic Gardens, Kew [PDF]

open access: yes, 2015
The Royal Botanic Gardens, Kew, holds a small but valuable and unstudied collection of photographs by Everard im Thurn (1852–1932) who contributed to botany, with specimens and publications, and to anthropology, publishing works that highlight his ...
Albuquerque, Sara
core   +1 more source

Effect of moist chilling treatment on seed germination of 7 species of Anthemis and Tanacetum [PDF]

open access: yesعلوم و فناوری بذر ایران, 2018
Two genera of chamomile and tansies (Anthemis and Tanacetum) belong to asteraceae family are widely used as medicinal plant possessing several pharmacological effects due to presence of active compounds.
Mohsen Nasiri
doaj   +1 more source

BOTANY [PDF]

open access: yesJournal of the Royal Microscopical Society, 1922
n ...
openaire   +1 more source

Taxonomic synopsis of Caryomene (Menispermaceae) in the Brazilian Amazon [PDF]

open access: yesActa Amazonica, 2023
Caryomene comprises five species distributed in South America. For more than half a century, the genus has not received taxonomic treatment. However, many recent collections were carried out in Amazonia and new occurrences need to be inserted.
Julio dos Santos de SOUSA   +1 more
doaj   +1 more source

Some claim for the end of Botany… but what is Botany today? [PDF]

open access: yesItalian Botanist
In times of increasing interest in plants, a major challenge lies in effectively communicating the essence of Botany: What exactly does it encompass? Who are botanists? And how do botanical gardens differ from other types of gardens?
Lorenzo Peruzzi
doaj   +3 more sources

A review of the botany, phytochemistry, traditional uses, pharmacology, toxicology, and quality control of the Astragalus memeranaceus

open access: yesFrontiers in Pharmacology, 2023
Astragali Radix (Huangqi) is mainly distributed in the Northern Hemisphere, South America, and Africa and rarely in North America and Oceania. It has long been used as an ethnomedicine in the Russian Federation, Mongolia, Korea, Kazakhstan, and China. It
Panpan Wang   +6 more
doaj   +1 more source

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