Asteraceae tribe Arctotideae
J. Phys. Chim. Hist. Nat. Arts88: 159. 1819
Introduced; mostly Old World (especially s Africa), some species widely introduced as horticultural escapes.
Genera 16, species ca. 200 (3 genera, 4 species in the flora).
The circumscription for Arctotideae adopted here follows that of K. Bremer (1994) and is narrower than that of N. T. Norlindh (1977). Arctotideae have been thought to be closely allied to members of Cynareae, chiefly on similarities in styles of some taxa and prickly, thistly habits in some taxa; such a relationship has been rejected by recent workers. J. L. Panero and V. A. Funk (2002) associated Arctotideae with their subfamily Cichorioideae, along with tribes Vernonieae, Liabeae, Cichorieae, and Gundelieae.
Haplocarpha lyrata Harvey (perennials, leaves in basal rosettes, 8–15 cm, blades usually lyrate, abaxially lanate, peduncles scapiform, 10–25+ cm, ray corollas mostly yellow, abaxially green or red) has been noted as established in Florida (www.plantatlas.usf.edu).
|1||Phyllaries connate 1/3–3/4 their lengths; laminae of ray corollas 5-nerved, 4-lobed or -toothed.||Gazania|
|1||Phyllaries distinct; laminae of ray corollas 4-nerved, 3-lobed or -toothed||> 2|
|2||Ray florets neuter, corollas adaxially yellow (sometimes drying bluish) or ± bluish; pappi of 7–8+ scales ca. 0.5 mm (usually hidden by hairs on cypselae)||Arctotheca|
|2||Ray florets pistillate, corollas adaxially whitish to purplish, or yellow to orange (then purple at bases); pappi 0 or of 5–8 scales 0.5–4 mm (usually not hidden by hairs on cypselae)||Arctotis|