2. Galinsoga quadriradiata Ruíz & Pav. (fringed quickweed)

G. ciliata (Raf.) S.F. Blake

Pl. 279 c, d; Map 1182

Stems moderately to densely pubescent with more or less spreading hairs, those toward the stem tip (and on the inflorescence branches) with minute, dark, glandular tips. Leaf blades 2–7 cm long, lanceolate to ovate. Involucre 3–5 mm long, 3–6 mm in diameter, not persistent at fruiting, usually sparsely pubescent with spreading, gland-tipped hairs, with an outer series of 2 or 3 bracts and an inner series of 4–6 bracts, these fused basally with 2 or 3 adjacent chaffy bracts and this group shed as an intact unit with the fruits developing from the ray florets. Chaffy bracts subtending the disc florets mostly unlobed or shallowly 2- or 3-lobed for less than 1/5 of their length, shed with the fruits. Ray florets with a well-developed pappus about as long as the corolla tube. Disc florets with the pappus scales tapered to a sharply pointed, often minutely awned tip. 2n=32, 48, 64. May–November.

Introduced, widely scattered in the state although undoubtedly more widespread than collections indicate (probably native to Central America, South America; introduced nearly worldwide). Banks of rivers; also gardens, farmyards, railroads, roadsides, and open, disturbed areas.

Canne (1977) noted that in parts of tropical America a variant occurs with entirely nonglandular pubescence.