Senecio

(redirected from Jacobaea)
Also found in: Dictionary, Thesaurus, Encyclopedia.

Senecio

(sĕ-nē'sē-ō, -shē-ō),
1. A large genus of plants (family Compositae), many species of which contain alkaloids that produce hepatic necrosis.
2. A common weed of the eastern U.S., formerly used in the treatment of amenorrhea and other menstrual irregularities.
[L. a plant, groundsel, fr. senecio, an old man]

Senecio

a widespread genus of the Asteraceae family. The genus contains more than 1200 species of which at least 25 are known to be poisonous. Some of them are listed here; the toxins are a group of pyrrolizidine alkaloids which cause seneciosis hepatic injury, and the dummy syndrome, jaundice, emaciation and photosensitization; includes S. abyssinicus, S. alpinus, S. biligulatus, S. bipinnatisectus (Australian fireweed), S. braziliensis, S. burchelii, S. cineraria (dusty miller), S. cisplatinus, S. cunninghamii, S. desfontainei, S. desiderabilis, S. erraticus, S. glabellus, S. harvieanus, S. heterotrichus, S. integerrimus, S. integrifolius (fleawort), S. isatideus (Dan's cabbage), S. jacobaea (ragwort, tansy ragwort), S. latifolius, S. lautus, S. linearifolius (S. australis, fireweed), S. longilobus (woolly groundsel), S. madagascariensis (fireweed), S. magnificus (tall yellowtop), S. moorei, S. oxyphyllus, S. plattensis, S. pterophorus (African daisy), S. quadridentatus (cotton fireweed), S. raphanifolius (gantho metho), S. retrorsus (ragwort), S. riddellii (Riddell's groundsel), S. ruwenzoriensis, S. scleratus, S. selloi, S. spartioides (broom groundsel), S. spathulatus, S. squalidus (Oxford ragwort), S. tweediei, S. vernalis, S. vulgaris (groundsel).
References in periodicals archive ?
es otra planta que recibe el nombre de <<aceite de arnica>> y que no se confunde con Senecio Jacobaea L.
Wind dispersal distances in dimorphic achenes of ragwort, Senecio jacobaea.
Economic and regional benefits from the biological control of tansy ragwort, Senecio jacobaea, in Oregon, pp.
Juncus rugosus + Companeras: Senecio jacobaea + en 2; Populus nigra y Panicum repens 1 en 5; Juncus articulatus 2, Imperata cylindrica 1, Lonicera periclymenum subsp.
Tackling speciose genera: species composition and phylogenetic position of Senecio sect, Jacobaea (Asteraceae) based on plastid and nrDNA sequences.
Germination of Senecio jacobaea was inhibited in full light on the sand surface where moisture levels were reduced (van der Meijden and van der Waals-Kooi, 1979).