Results 81 to 90 of about 22,057 (263)
ABSTRACT The subfamily Gomphrenoideae is composed of about 480 accepted species, many of which have been historically used as medicinal plants, reason why they have been studied in terms of chemical profile, biological activity, and safety. This review consolidates the advances in research on this subfamily over the past 47 years, emphasizing its ...
Dayanna Isabel Araque Gelves +3 more
wiley +1 more source
Bridging a biogeographic 'gap' : microfossil evidence for the quillwort Isoetes on the Cumberland Plain west of Sydney during the early Colonial period [PDF]
Fossil spores preserved on historical archaeological sites at Parramatta and Richmond indicate that two or more species of the quillwort genus Isoetes (family Isoetaceae) were growing along rivers on the Cumberland Plain, west of Sydney, during the late ...
Casey, Mary, Macphail, Mike
core
Continuous hydrology and ecological evolution records of permafrost regions in Northeast China since the late Pleistocene (30 cal. ka BP) are obtained. Responses of hydrology and ecosystem dynamics to the climate cycle on the millennial scale and regional environmental effects related to permafrost.
Rui Liu +7 more
wiley +1 more source
First notice of Therion from South America with description of two new species from Argentina and Bolivia (Hymenoptera: Ichneumonidae) [PDF]
Therion Curtis (Ichneumonidae: Anomalinae) has a nearly cosmopolitan geographic distribution but has not previously been recorded from South America. In most Therion the tarsal claws are simple or have only a few inconspicuous teeth near the base.
Porter, Charles C.
core
"Arthrocaulon meridionalis" (Chenopodiaceae), a new species of Mediterranean flora
A new species of Arthrocaulon Piirainen & G. Kadereit, A. meridionalis is described. This diploid taxon is known from the islands of Sicily and Sardinia and from circum-Mediterranean territories (from North Africa to the Anatolian Peninsula in Turkey ...
Esteban Ramírez +3 more
doaj +1 more source
Las Quenopodiáceas de la Provincia de La Pampa
Manuscrito aceptado el 7 de mayo de 1986.En esta contribución se enumeran los géneros y las especies de la familia Chenopodiaceae que viven espontáneamente en la provincia de La Pampa. Argentina.
P. E. Steibel
doaj
Análisis del contenido polínico de la atmósfera de Huelva: (1989-1992) [PDF]
Análisis del contenido polínico de la atmósfera de Huelva (1989-1992). En este trabajo se presenta el contenido polínico de la atmósfera de Huelva encontrado tras cuatro años de muestreo (1989- 1992) utilizando un captador polínico tipo Cour.
Candau, Pilar +1 more
core +3 more sources
The spread of new viral pathogens and phytoplasmas in cultivated plants and their risks
Abstract The study contains a description of the genome and particles, spectrum of host plants, geographical distribution, forecast of spread and impacts on agricultural production, disease symptoms, life cycle, and means of protection in integrated and organic production in the Czech Republic for 22 plant viruses, 3 viroids and 4 phytoplasmas, in ...
wiley +1 more source
The pollen grains of 5 genera and 19 species of Chenopodiaceae from northeastern Argentina are examined. The species show close similarities among themselves and with the Amaranthus pollen type of Amaranthaceae.
Graciela A. Cuadrado
doaj
Cuatro sitios arqueológicos correspondientes al Periodo prehispánico tardío de las sierras de Córdoba (ca. 1000-300 AP): Los Algarrobos 1, Puesto La Esquina 1 (Pampa de Olaen), C.Pun.39 y Las Chacras 2 (valle de Punilla), fueron estudiados en base a su ...
Matías E. Medina +2 more
doaj

