Subordinate Taxa
Scientific Name:
Silybum Adans., Fam. Pl. 2, 116, 605 (1763)

Annual or biennial herbs.  Hairs short and mealy, or long, fine and cobwebby.  Lvs alternate, sessile, pinnatifid, sinuate, dentate, auriculate to amplexicaul;  lobes and teeth spine-tipped.  Capitula homogamous, globose to ovoid, solitary.  Involucral bracts in several series, ovate to linear, glabrescent, with sparse cobwebby hairs on margins;  margins and apex spinous. Receptacle flat, with dense hairs;  scales 0.  Florets ☿, all tubular.  Corolla glabrous, 5-lobed, reddish purple.  Anthers acute at apex, sagittate at base; filaments hairy.  Style branches linear, erect, appressed. Achenes obovoid, smooth;  achene insertion obliquely basal;  pappus hairs in several rows, united at base into a ring;  outer hairs stiff, scabrid; innermost hairs short, very fine.

[From:  Webb et al. (1988) Flora of New Zealand. Volume 4.]

Number of species in New Zealand within Silybum Adans.
Exotic: Fully Naturalised1
Adanson, M. 1763: Familles des Plantes. Vol. 2. Vincent, Paris.
Mabberley, D.J. 2008: Mabberley's plant book, a portable dictionary of plants, their classification and uses. Edition 3. Cambridge University Press.