Search results for "Picris"

showing 3 items of 3 documents

Sesquiterpene lactones from Picris echioides

1992

Abstract The aerial parts of Picris echioides yielded the new germacranolide 3β-hydroxybalchanolide and the known guaianolides hieracin I, hieracin II, 8-deoxylactucin, jacquilenin and 11 -epijacquilenin.

Germacranolidechemistry.chemical_classificationStereochemistryPlant ScienceGeneral MedicineHorticulturePicris echioidesSesquiterpeneBiochemistrychemistry.chemical_compoundchemistryOrganic chemistryMolecular BiologyLactonePhytochemistry
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Cynipid wasps inducing galls on plants of the genus Picris (Asteraceae) in Europe, with a description of a new species of Phanacis Foerster (Hymenopt…

2008

13 paginas y 8 figuras

LarvaCompositaeHymenoptera Cynipidae Gall wasps Picris Spain Italy SicilybiologyHymenopteraAsteraceaebiology.organism_classificationSettore AGR/11 - Entomologia Generale E ApplicataGall waspsLarvaePicrisGenusSpainInsect ScienceBotanyKey (lock)InstarSicilyEcology Evolution Behavior and SystematicsSex ratio
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A taxonomical study of the subtribe leontodontinae based on the distribution of phenolic compounds

1993

Abstract Evaluation of the phenolic constituents of five species belonging to the subtribe Leontodontinae (family Asteraceae) allowed the identification of ten flavonoid and eight phenolic acids by means of HPLC and other standard methods. The role of these compounds in relation to the morphological characteristics in the systematics of the subtribe is discussed.

Systematicschemistry.chemical_classificationbiologyFamily AsteraceaeFlavonoidbiology.organism_classificationBiochemistrychemistry.chemical_compoundPicrischemistryChemotaxonomyBotanyLeontodonTaxonomy (biology)PhenolsEcology Evolution Behavior and SystematicsBiochemical Systematics and Ecology
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