Ixeris

Perennials [annuals or biennials], (5–)10–30+ cm; taprooted (sometimes rhizomatous; stolons produced in some taxa). Stems (excluding stolons) 1–5+, erect (often scapiform), usually branched distally, glabrous. Leaves basal and cauline; petiolate; blades elliptic, oblong, orbiculate, or ovate [lanceolate to oblanceolate or linear], margins entire or denticulate to dentate [pinnately lobed] (faces glabrous [± scabrous]). Heads borne singly or in loose, corymbiform [paniculiform] arrays. Peduncles not inflated distally, usually bracteate. Calyculi of 3–10+, deltate to lanceolate bractlets. Involucres campanulate to cylindric, 2–5[–8+] mm diam. Phyllaries 5–10[–13+] in ± 1 series, linear [lanceolate], equal to subequal, margins sometimes scarious, apices obtuse to acute. Receptacles convex, weakly pitted, glabrous, epaleate. Florets 6–12+; corollas yellow [white or bluish]. Cypselae reddish brown [black], bodies ± fusiform, sometimes ± compressed, ribs (or wings) 10, beaks equal to or shorter than bodies, faces glabrous; pappi persistent, of 20–30, white [brown], ± equal, smooth or barbellulate bristles in 1 series. x = 8.

Distribution

Introduced; Southeast Asia.

Discussion

Species ca. 20 (1 in the flora).

Selected References

None.

Lower Taxa

Ixeris stolonifera