Conyza floribunda Kunth

Family: Asteraceae, Tribe: Astereae

Pertinent Synonyms & Notes (particularly those used in California; go to GRIN for other synonyms)

sometimes treated as a variety of Conyza bonariensis (L.) Cronquist

Pertinent Common Names (particularly those used in California; go to GRIN for other common names)


Primary Disseminule Type


Description (diagnostics are in brown)

Fruit a cypsela, narrowly elliptic to oblong, sometimes slightly curved, mildly compressed (1-veined on each edge, sometimes veins are reddish), cross-section biconvex, 1–1.5 mm long x 0.2–0.4 mm wide x 0.1–0.3 mm thick. Surface sparsely hairy (rarely glabrous), pale tan. Pappus persistent (bristles are easily broken, though not necessarily at their bases), bristles mostly 2–3(4) mm long, whitish to yellowish.

Style base inconspicuous, cylindrical, whitish.

Fruit attachment scar basal, cup-like, whitish.

Similar Species

Similar Species Comparison Chart

Risk Assessment (codes in yellow or red indicate cause for concern; assessments are current as of mid-2011; click AUQP, NZBORIC, or NZBPI for access to the most recent versions of these databases and possible assessment changes)