| Senecio venosus | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Senecio |
| Species: | S. venosus |
| Binomial name | |
| Senecio venosus Harv | |
Senecio venosus is a species of Senecio in the family Asteraceae. It is endemic to South Africa, Botswana, and Zimbabwe. [1]
Senecio is a genus of the daisy family (Asteraceae) that includes ragworts and groundsels. The scientific Latin genus name, Senecio, means "old man."
Senecio vulgaris, often known by the common names groundsel and old-man-in-the-spring, is a flowering plant in the daisy family Asteraceae. It is an annual herb, native to Europe and widely naturalised as a ruderal species in suitable disturbed habitats worldwide.
Pyrrolizidine alkaloids (PAs), sometimes referred to as necine bases, are a group of naturally occurring alkaloids based on the structure of pyrrolizidine. Pyrrolizidine alkaloids are produced by plants as a defense mechanism against insect herbivores. More than 660 PAs and PA N-oxides have been identified in over 6,000 plants, and about half of them exhibit hepatotoxicity. They are found frequently in plants in the Boraginaceae, Asteraceae, Orchidaceae and Fabaceae families; less frequently in the Convolvulaceae and Poaceae, and in at least one species in the Lamiaceae. It has been estimated that 3% of the world’s flowering plants contain pyrrolizidine alkaloids. Honey can contain pyrrolizidine alkaloids, as can grains, milk, offal and eggs. To date (2011), there is no international regulation of PAs in food, unlike those for herbs and medicines.
Adenanthos venosus is a flowering plant from the family Proteaceae that can be found in Western Australia, where its conservation status is Declared Rare Flora. It is 0.4–2 metres long and has either red or pink coloured flowers. The flowers remain in such colour only for one month in winter and then become greyish-white from May to December.
Senecio anthemidiphyllus is a species of flowering plant in the family Asteraceae. It is endemic to Chile and Argentina.
Senecio anthemifolius is a species of flowering plant in the family Asteraceae. It is endemic to South Africa.
Senecio antofagastanus is a species of flowering plant in the family Asteraceae. It is endemic to Chile.
Senecio antucensis is a species of flowering plant in the family Asteraceae. It is endemic to Argentina and Chile.
Senecio apolobambensis is a species of Senecio in the family Asteraceae. It is endemic to Bolivia.
Senecio aquifoliaceus is a species of flowering plant in the family Asteraceae. It is endemic to South Africa.
Senecio aquilaris is a species of flowering plant in the family Asteraceae. It is endemic to Argentina and Bolivia.
Senecio arabidifolius is a species of flowering plant in the family Asteraceae. It is endemic to South Africa and Lesotho.
Senecio arechavaletae is a species of Senecio in the family Asteraceae. It is endemic to Argentina and Uruguay.
Senecio arenarius is a species of flowering plant in the family Asteraceae. It is endemic to South Africa, Namibia, and Botswana.
Senecio argenteus is a species of flowering plant in the family Asteraceae. It is endemic to.
Senecio argillosus is a species of flowering plant in the family Asteraceae. It is endemic to Uruguay.
Senecio argophylloides is a species of flowering plant in the family Asteraceae. It is endemic to.
Senecio argyreus is a species of flowering plant in the family Asteraceae. It is endemic to Argentina and Chile.
Senecio varvarcensis is a species of Senecio in the family Asteraceae. It is endemic to Argentina.
Senecio vegetus is a species of Senecio in the family Asteraceae. It is endemic to Peru and Bolivia.
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