Conyza bonariensis (L.) Cronquist
Family: Asteraceae, Tribe: Astereae
Pertinent Synonyms & Notes (particularly those used in California; go to GRIN for other synonyms)
Erigeron bonariensis L., E. linifolium Willd.
Pertinent Common Names (particularly those used in California; go to GRIN for other common names)
hairy fleabane, wavy-leaved fleabane
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), cross-section biconvex, 1–1.8 mm long x 0.3–0.4 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 3–4+ mm long, brownish white to orangish-yellow, often with reddish tips at maturity.
Style base inconspicuous, cylindrical, whitish.
Fruit attachment scar basal, cup-like, whitish.
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)
AUQP, NZBORIC, NZBPI