Twelve essential oils from Mediterranean aromatic plants were tested for their phytotoxic activity, at different doses, against the germination and the initial radicle growth of seeds of Raphanus sativus, Lactuca sativa and Lepidium sativum. The essential oils were obtained from Hyssopus officinalis, Lavandula angustifolia, Majorana hortensis, Melissa officinalis, Ocimum basilicum, Origanum vul...

A. Mugarza, A. Marini, T. Strasser, W. Schattke, A. Rubio, F. J. Garcı́a de Abajo, J. Lobo, E. G. Michel, J. Kuntze, and J. E. Ortega Departamento de Fı́sica Aplicada I, Universidad del Paı́s Vasco, Plaza Oñate 2, E-20018 San Sebastián, Spain Centro Mixto CSIC/UPV and DIPC, 20018 San Sebastián, Spain Institut für Theoretische Physik und Astrophysik, Christian-Albrechts-Universität zu Kiel, Leibniz...

We developed allometric equations to predict whole-tree leaf area (A(l)), leaf biomass (M(l)) and leaf area to sapwood area ratio (A(l):A(s)) in five rain forest tree species of Costa Rica: Pentaclethra macroloba (Willd.) Kuntze (Fabaceae/Mim), Carapa guianensis Aubl. (Meliaceae), Vochysia ferru-gi-nea Mart. (Vochysiaceae), Virola koshnii Warb. (Myristicaceae) and Tetragastris panamensis (Engl....

Essential oils of sixteen Chinese medicinal plants were screened for fumigant toxicity against Bemisia tabaci. The essential oil of Allium sativum exhibited the strongest fumigant activity against B. tabaci with an LC50 value of 0.11 μg/l followed by the essential oils of Agastache rugosa (LC50 = 7.08 μg/l), Illicium verum (LC50 = 8.61 μg/l), Chenopodium ambrosioides (LC50 = 8.80 μg/l), and Syz...

Tipuana tipu (Benth.) Kuntze is a tree from the leguminosae family (Papilionoideae) indigenous in Argentina and extensively used in urbanism, mainly in Southern Brazil. The epicuticular waxes of leaves and branch, and flower surface were studied by high temperature high resolution gas chromatography. Several compounds were characterized, among which the aliphatic alcohols were predominant in br...

A case report (two patients) of accidental intoxication occurred in Northern Italy. Conium maculatum L. (poison hemlock) leaves were confused with and collected as Foeniculum vulgare Mill. (sweet fennel). C. maculatum contains piperidine alkaloids: coniine, N-methylconiine, conhydrine, pseudoconhydrine and -coniceine, toxic to human beings. Identification and microscopic examination of the cons...

No Brasil, o consumo de chás a base plantas medicinais e fitoterápicas advém do conhecimento empírico da população acerca dos benefícios uso cada espécie. Dentre os mais comercializados no Brasil estão as duas espécies conhecidas erva doce, Pimpinella anisum Foeniculum vulgare, utilizadas não apenas pelo seu efeito ansiolítico, mas também pelos seus controle sintomas climatério.