Annual, biennial or perennial herbs, sometimes shrubs, rarely trees, tissues sometimes containing milky sap, glabrous, pubescent, tomentose, spinous or variously sessile- or stipitate-glandular. Leaves alternate or sometimes opposite, exstipulate (but sometimes with stipuliform appendages), entire, toothed, lobed or variously dissected. Individual flowers usually numerous, aggregated and ± sessile (briefly immersed to very shortly stipitate) on a common receptacle and surrunded by an involucre of 1-many series of phyllaries (involucral bracts),the whole comprising a capitulum; phyllaries free, rarely connate; capitula solitary to very many, rarely agreegrated into secondary capitulum-like glomerules.Receptable sometimes bearing paleae (scales), hairs or bristles.Flowers (florets)epigynous, bisexual, female, m ale(at least functionally so) or neuter (sterile). Calyx absent, often replaced on apex of ovary by a pappus of 1 or more series of bristles and / orscales. Corolla gamopetalous, tabular throughout or dilated or 1(-2)-lipped above,variously truncate or 1-5-toothed at apex (appices); rarely corolla absent. Stamens (1-)5, epipetalous, filaments free anthers laterally connate into a cylinder around style (free in one species). Ovary inferior, 1-celled with one basal ovule; style usually divided above into two branches, sometimes entire on male flowers, emerging through anther cylinder, first collecting and exposing pollen,later exposing stigmatic surfaces if bisexual. Fruit an achene (cypsela) usually bearing a persistent or deciduous pappus; pappus sessile or borne on a beak(rostrum).
Annual or perennial herbs;stems prostrate,ascending or erect,simple or branched.Leaves alternate,simple,entire,toothed or lobed.Capitula radiate,solitary or in loose racemes.Involucres hemispherical;phyllaries 3-4-seriate, imbricate, herbaceous. Receptacle flat or slightly convex,naked.Flowers dimorphic or trimorphic.Ray flowers usually numerous,female;ligules purplish or white,narrow. Disc flowers bisexual;corolla tubular-campanulate,5-lobed; style branches with short subacute or obtuse appendage.Eligulate female flowers sometimes present between ray and disc flowers,with short filiform corollas.Achenes obovoid,compressed;pappus ± as long as disc flowers,simple or double with an outer series of bristles.
Rhizomatous perennial; stems prostrate or ascending, 20-30(-45)cm,sparsely pubescent.Basal leaves obovote,3(-5)-lobed,3-4.5 x 1-2cm,acute,attenuate at base,sparsely pubescent;upper leaves elliptic,1-2.5 x 0.2-0.3cm,entire.Capitula usually solitary,terminal or axillary on peduncles 5-10cm,involucre c 6mm diameter,3-4-seriate;phyllaries lanceolate,c 4 x 1mm,acuminate,sparsely pubescent,mid-vein brownish. Flowers dimorphic.Ray flowers 2-seriate; corolla tube 2mm; ligule white,sometimes becoming pink on fading, 5 x 0.4mm.Disc corollas yellow,3mm. Achenes oblong,1 x 0.4mm,sparsely minute pubescent; pappus 1-seriate,3mm.