Asteraceae tribe Mutisieae
J. Phys. Chim. Hist. Nat. Arts88: 199. 1819
North America, mostly South America, Asia, Africa, Pacific Islands (Hawaii), Australia.
Genera ca. 76, species ca. 1000 (7 genera, 14 species in the flora).
Mutisieae as traditionally circumscribed is now considered to be polyphyletic. Molecular work has shown that Barnadesia and its allies, a South American group formerly placed in Mutisieae, constitute the basal clade of the family; they are now treated as a distinct subfamily, Barnadesioideae (K. Bremer and R. K. Jansen 1992). Similarly, J. L. Panero and V. A. Funk (2002) segregated two additional subfamilies from Mutisieae (based on Gochnatia and on Hecastocleis). Mutisieae in the broad sense are centered in the New World tropics and subtropics and are relatively poorly represented elsewhere.
Gerbera jamesonii Bolus ex Hooker f. (Transvaal Daisy; perennials, leaves in basal rosettes, petioles 10–20+ cm, blades usually pinnately lobed, 12–25+ cm, abaxially lanate, peduncles scapiform, to 50+ cm, ray corollas red to orange, pink, or yellow, laminae 2–3+ cm) has been noted as established in Florida (http://www.plantatlas.usf.edu).
|1||Leaves: abaxial faces glabrous or with scattered, straight, sometimes glandular, hairs and/or double hairs||> 2|
|1||Leaves: abaxial faces usually tomentose, tomentulose, or covered with dense wool (thinly gray-tomentose in Leibnitzia)||> 4|
|2||Leaf blades narrowly linear-lanceolate (spiny near bases, ± thickened at margins); corollas actinomorphic; style-branch apices rounded||Hecastocleis|
|2||Leaves broadly lanceolate or ovate (sometimes linear-lanceolate in Trixis; not spiny at bases or thickened at margins); corollas 2-lipped; style-branch apices truncate||> 3|
|3||Perennials (caudices brown-woolly); corollas pink, lavender, or white||Acourtia|
|3||Shrubs; corollas yellow||Trixis|
|4||Shrubs or subshrubs; leaves (stiff): adaxial faces dark green; corollas actinomorphic (heads discoid)||Gochnatia|
|4||Perennials; leaves (soft): adaxial faces light green; corollas actinomorphic (heads discoid or disciform) or actinomorphic and zygomorphic (heads disciform or quasi-radiate)||> 5|
|5||Leaf blades triangular to broadly triangular, bases cordate to hastate; heads in paniculiform arrays; corollas of inner florets actinomorphic||Adenocaulon|
|5||Leaf blades elliptic to obovate, bases cuneate; heads borne singly; corollas of inner florets zygomorphic (2-lipped) or nearly actinomorphic||> 6|
|6||Heads chasmogamous (produced well after rosette leaves); cypselae glabrous or pubescent (hairs relatively short, apices rounded or apiculate)||Chaptalia|
|6||Heads chasmogamous (early spring, before and concurrently with first rosette leaves) or cleistogamous (produced after rosette leaves); cypselae strigose to hispid (hairs relatively long, apices sharp-pointed)||Leibnitzia|