Results 91 to 100 of about 2,324 (181)

Notulae to the Italian alien vascular flora: 2 [PDF]

open access: yes, 2016
In this contribution, new data concerning the Italian distribution of alien vascular flora are presented. It includes new records, exclusions and confirmations for Italy or for Italian administrative regions for taxa in the genera Ageratum, Aster ...
ARDENGHI, N. M. G.   +27 more
core   +2 more sources

Rediscovery of Bouteloua vaneedenii (Gramineae: Chloridoideae): endemic species from the West Indies Redescubrimiento de Bouteloua vaneedenii (Gramineae: Chloridoideae): especie endémica de las Indias Occidentales

open access: yesRevista Mexicana de Biodiversidad, 2011
Bouteloua vaneedenii is an endemic and extremely rare grass of the West Indies. Very few collections are known, and the most recent collection is from 1922. With the aim of finding the species, a team of Mexican and Cuban agrostologists conducted a field
María Elena Siqueiros-Delgado   +4 more
doaj  

Os gêneros Sporobolus e Leptochloa (Poaceae-Chloridoideae) em Pernambuco, Brasil

open access: yesRodriguésia
RESUMO O presente trabalho é um levantamento taxonômico dos gêneros Sporobolus e Leptochloa, baseado em uma análise de material proveniente de coletas e depositados nos principais herbários de Pernambuco. Foi confirmada a ocorrência de quatro espécies do
Maria Bernadete Costa-e-Silva   +1 more
doaj   +1 more source

Poaceae in the “Seridó” Ecological Station, Rio Grande do Norte, Brazil [PDF]

open access: yes, 2009
Trata-se do primeiro levantamento florístico das espécies de Poaceae da Estação Ecológica do Seridó. A família apresenta grande valor econômico e ecológico. A região denominada Seridó apresenta uma Caatinga aberta com estrato herbáceo contínuo, onde os
Ferreira, Caroline Gracielle Torres   +3 more
core   +2 more sources

Un nuevo pasto exótico invasor en Argentina: Enneapogon cenchroides (Poaceae)

open access: yesBoletín de la Sociedad Argentina de Botánica
Introducción y objetivos: Las invasiones biológicas son una de las principales causas de pérdida de biodiversidad y degradación de los ecosistemas. Sin embargo, el número de especies exóticas e invasoras sigue en aumento a escala global, y Argentina no ...
Lucas M. Carbone, Guillermo Jewsbury
doaj   +1 more source

Grass assemblages and diversity of conservation areas on the coastal plain south of Maputo Bay, Mozambique

open access: yesBothalia: African Biodiversity & Conservation, 2004
A floristic analysis of the grass species assemblages of the Licuati Forest and Maputo Elephant Reserves south of Maputo Bay, Mozambique, is presented. Sampling of grass data was undertaken in six previously described, major vegetation types.
S. J. Siebert   +3 more
doaj   +1 more source

Poaceae em uma planície de inundação no Brasil: listagem florística e novas ocorrências

open access: yesHoehnea
RESUMO O presente estudo objetiva caracterizar as Poaceae da Planície de Inundação do Alto Rio Paraná (PIAP) e seu entorno, localizada a 22º38'-22º57'S e 53º05'-53º36'O, entre os Estados do Paraná e Mato Grosso do Sul.
Kazue Kawakita   +2 more
doaj   +1 more source

The Kranz syndrome in the Eragrostideae (Chloridoideae, Poaceae) as indicated by carbon isotopic ratios*

open access: yesBothalia: African Biodiversity & Conservation, 1984
13C/12C ratios are generally regarded as being very reliable indicators of C3 or C4 photosynthesis. These relative carbon isotope ratios are expressed as a negative δ 3C and fall into two distinct groups: Kranz (or C4) plants with δ between -9°/00 no and
Hector O. Panarello, Evangelina Sanchez
doaj   +1 more source

Subtribal classification of the New World Eragrostideae (Poaceae: Chloridoideae)

open access: yesSIDA, contributions to botany, 1995
A subtribal classification system for 38 genera of Eragrostideae that occur in the New World is presented.
Paul M. Peterson   +2 more
openaire   +1 more source

Molecular Dating, Evolutionary Rates, and the Age of the Grasses [PDF]

open access: yes, 2017
Many questions in evolutionary biology require an estimate of divergence times but, for groups with a sparse fossil record, such estimates rely heavily on molecular dating methods.
Christin, Pascal-Antoine   +5 more
core  

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