Results 31 to 40 of about 12,773 (212)

A framework infrageneric classification of Carex (Cyperaceae) and its organizing principles

open access: yes, 2020
Phylogenetic studies of Carex L. (Cyperaceae) have consistently demonstrated that most subgenera and sections are para‐ or polyphyletic. Yet, taxonomists continue to use subgenera and sections in Carex classification. Why?
E. Roalson   +33 more
semanticscholar   +1 more source

Unprecedented Intraindividual Structural Heteroplasmy in Eleocharis (Cyperaceae, Poales) Plastomes

open access: yesGenome Biology and Evolution, 2020
Plastid genomes (plastomes) of land plants have a conserved quadripartite structure in a gene-dense unit genome consisting of a large inverted repeat that separates two single copy regions.
Chaehee Lee, Tracey A Ruhlman, R. Jansen
semanticscholar   +1 more source

Carex divisa, una nueva ciperácea naturalizada en Chile

open access: yesCollectanea Botanica, 2020
Carex divisa se registra por primera vez en Chile. Se incluye una discusión taxonómica para su apropiada determinación.
J. Calvo, P. Jiménez-Mejías
doaj   +1 more source

Rhynchospora dilectissimi-patris (sect. Pauciflorae Kükenth., subsect. Plumoso-setosae Kükenth.), sp. nov., and some notes on its allies.

open access: yesAnales del Jardín Botánico de Madrid, 1997
In the present paper a new species of the genus Rhynchospora (sect. Pauciflorae, subsect. Plumoso- setosae) is described, and R. trichochaeta C.B. Clarke is lectotypified. In addition. new localities for R. subplumosa and R.
Modesto Luceño
doaj   +1 more source

Comparing the Effect of Herbal Mouthwash Containing Hydroalcoholic Extracts of Cyperus rotundus L. and Thymus vulgaris L. and Chlorhexidine Mouthwash on Common Periodontal Pathogens [PDF]

open access: yesJournal of Mazandaran University of Medical Sciences, 2023
Background and purpose: Gingivitis is an inflammatory disease of the gums caused by accumulation of dental plaque. It can become a chronic periodontal disease if plaque spread below the gum line.
Ali Pezeshkian   +3 more
doaj  

Impact of Anthropogenic Activities and Climate Change on the Wetlands in the North-West of Madagascar. [PDF]

open access: yesPlant Environ Interact
ABSTRACT Macrophytes are vulnerable to various factors in their natural ecosystems, including climatic, ecological, and anthropogenic changes. This study aims to document how these factors influence floristic composition. Four sites were investigated in the Boeny Region of northwest Madagascar: Ambatoboeny, Marovoay, Ankarafantsika National Park, and ...
Ramiandrisoa BA   +6 more
europepmc   +2 more sources

A tale of worldwide success: Behind the scenes of Carex (Cyperaceae) biogeography and diversification

open access: yesJournal of Systematics and Evolution, 2019
The megadiverse genus Carex (c. 2000 species, Cyperaceae) has a nearly cosmopolitan distribution, displaying an inverted latitudinal richness gradient with higher species diversity in cold‐temperate areas of the Northern Hemisphere.
S. Martín-Bravo   +26 more
semanticscholar   +1 more source

Genome sequence of Kobresia littledalei, the first chromosome-level genome in the family Cyperaceae

open access: yesScientific Data, 2020
Kobresia plants are important forage resources in the Qinghai-Tibet Plateau and are essential in maintaining the ecological balance of grasslands. Therefore, it is beneficial to obtain Kobresia genome resources and study the adaptive characteristics of ...
M. Can   +11 more
semanticscholar   +1 more source

Soil weed seed bank in situ and ex situ at a smallholder field in Maranhão State, northeastern Brazil

open access: yesActa Scientiarum. Agronomy, 2014
The objective of this research was to assess the density, floristic composition,  phytosociology and diversity of a soil weed seed bank ex situ by germination in a greenhouse and in situ by weed sampling on a smallholder corn field located in Lago Verde ...
Mário Luiz Ribeiro Mesquita   +2 more
doaj   +1 more source

Chorological and nomenclatural notes on Peruvian Carex (Cyperaceae)

open access: yesCaldasia, 2019
Here we present relevant records of nine species of the genus Carex (Cyperaceae) new for Peru: C. amicta, C. brehmeri, C. camptoglochin, C. enneastachya, C. livida, C. maritima, C. ownbeyi, C. ruth-satzae, and C. vallis-pulchrae.
Pedro Jiménez-Mejías   +8 more
doaj   +1 more source

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