Galinsoga parviflora

Flora of North America

as described under Galinsoga parviflora

Plants 4-60 cm. Leaf blades 7-110 × 3-70(-80) mm. Peduncles 1-40 mm. Involucres campanulate, 2.5-5 mm diam. Phyllaries persistent. Paleae: outer persistent with distal phyllaries or falling, elliptic to obovate; inner usually persistent, lanceolate to ovate or obovate, 2-3.5 mm, 3-lobed, lobes to 1/3+ total lengths, acute. Ray florets (3-)5(-8); corollas usually dull white (pink), laminae 0.5-1.8 × 0.7-1.5 mm. Disc florets 15-50. Cypselae: rays 1.5-2.5 mm; discs 1.3-2.5 mm, glabrous or strigose; pappi: rays 0 or of 5-10, laciniate scales 0.5-1 mm; discs 0, or of 15-20 white or gray, linear, fimbriate, obtuse (acute) scales 0.5-2 mm.

Herbarium specimens

/imglib/OSU_OSC/OSC160/OSC160373_1492397286_tn.jpg
https://intermountainbiota.org/imglib/storage/reno/plantae/00066/66413_tn.jpg
https://www.pnwherbaria.org/images/thumbnail.php?Image=WTU-V-030284.jpg
https://www.pnwherbaria.org/images/thumbnail.php?Image=HPSU001970.jpg
http://www.pnwherbaria.org/images/thumbnail.php?Image=WCW012453.jpg