Senecio

(redirected from senecios)
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 ?
Pinks, artemisias, senecios and lavender and rosemary with their aromatic oils are good examples.
Not far away, in Escondido, Peter Bailey's wide bands of silvery-blue agaves wind across a rocky slope; interspersed with rose-tinged flap-jack plant (Kalanchoe thrysiflora) and the ice blue senecios, they create a landscape as dramatic and otherworldly as the seafloor.
TRY to use plants which need relatively little watering such as pelargoniums, helenium, ornamental and edible sages, cistus, rosemary, caryopteris, lavenders, senecios, phlomis and gazanias.