General: Annual herb from a fibrous root; stems branched, spreading-hairy, especially above, 20-70 cm tall.
Leaves: Basal leaves lacking; stem leaves opposite, simple, stalked, egg-shaped to narrowly egg-shaped, coarsely toothed, sparsely stiff-hairy, 3-8.5 cm long (including the stalk), 1-4 cm wide.
Flowers: Heads with ray and disk flowers, numerous in leafy-bracted clusters, the bases spreading-hairy with gland-tipped hairs; involucres 2-3 mm tall; involucral bracts egg-shaped; receptacles conic, covered with narrow, membranous scales; ray flowers white, 1-2 mm long; disk flowers yellow.
Fruits: Achenes obscurely angled, coarse-hairy, those of the disk flowers compressed; pappus of 9-14 long-pointed, white scales.
If more than one illustration is
available for a species (e.g., separate illustrations were provided for two
subspecies) then links to the separate images will be provided below.
Note that individual subspecies or varietal illustrations are not always available.
Synonyms and Alternate Names: Galinsoga aristulata E.P. Bicknell Galinsoga bicolorata H. St. John & D. White Galinsoga caracasana (DC.) Sch. Bip. Galinsoga ciliata (Raf.) S.F. Blake
