Two genera of Vernonieae subtribe Erlangeinae with Type A pollen, 5-ribbed achenes, and blunt-tipped sweeping hairs on the styles are described as new, Hoffmannanthus with one species and with Vernonia brachycalyx O. Hoffm. as type, and Jeffreycia with five known species, with Vernonia zanzibarensis Less. as type. Vernonia abbotiana O. Hoffm. is neotypified and is an older name for V. brachycalyx.

Seed oils of a number of Asteraceae and Euphorbiaceae species are enriched in 12-epoxyoctadeca-cis-9-enoic acid (vernolic acid), an unusual 18-carbon Delta(12)-epoxy fatty acid with potential industrial value. It has been previously demonstrated that the epoxy group of vernolic acid is synthesized by the activity of a Delta(12)-oleic acid desaturase-like enzyme in seeds of the Asteraceae Crepis...

The aim of this review is to analyze published data on the pharmacological, Phytochemical and Pharmacognostic profile of plant Vernonia anthelmintica Willd genus. This will help to identify the state of knowledge in regard to this plant species and to propose future research priorities. Material and Method-The major scientific databases including Science direct, cab direct, CeRA, Proquest and G...

In Malaysia, Vernonia cinerea IS a commonly found weed. It is reported to have sedative actions and as such is included in several traditional herbal preparations used for insomnia and related ailments (Majallah Tamat Latehan Sinseh China, 1976). Most preparations of Vernonia cinerea are concoctions where the plant is boiled in water. Any active ingredient is therefore presumably water soluble ...

The larvicidal efficacy of Vernonia cinerea leaf extracts against the common filarial vector, Culex quinquefasciatus was determined. Ground Vernonia cinerea leaves were sequentially extracted with ethyl acetate, chloroform, acetone and methanol. A series of concentrations of the extracts ranging from 0.05 – 2 mg/ml were tested against third instar larvae using WHO protocol and their percentage ...

The comparative effects of ethanol leaf-extracts of Vernonia amygdalina and Azadirachta indica on catalases and reduced glutathione in albino rats were conducted through spectrophotometric methods. The animals were grouped into seven (A, B, C, D, E, F and G) containing six albino rats each. The leaf-extract of Azadirachta indica at 200, 400 and 600 mg/kg body weights was administered for two we...

Some Vernonia species (Vernonia ambigua, Vernonia blumeoides and Vernonia oocephala) used in Northern Nigerian traditional medicine, were subjected to phytochemical screening using standard procedures. The antibacterial activity using the disc diffusion method as outlined by the NCCLS was carried out on Klebsiella pneumoniae, Streptococcus pyogenes, Staphylococcus aureus, Corynbacterium ulceran...

The synthesis of a model endocyclic allene related to the vernonia allenes is described. Fragmentation of a suitable decalin derivative gave the simplified germacrane scaffold. Computational analysis of this and related substrates provides insight into the stereoelectronic requirements of C-C fragmentation. The overall strategy to access these and other sesquiterpenes and the key steps in the p...

The multiple longitudinal ducts in the corolla lobes found in the closely related genera Vernonia, Vernonanthura and Trepadonia are microscopically studied and illustrated. The lack of such ducts in the two South American species that have until now been retained in Vernonia indicates that they should probably be excluded from the genus.