| Author | L. | |
| Distribution | Mountains only, but very scarce in the southwestern counties; collections south to Haywood County, and an iNaturalist photo from Graham County. A collection in 2016 from Rowan County in the central Piedmont (CATU) is not available online for review by the editors, and thus is not added to the map as a result.
Circumboreal, in North America south to GA, LA, and CA. | |
| Abundance | Uncommon to locally fairly common in the northern counties, but rather rare in the central Mountains, and very rare in the southwestern counties. | |
| Habitat | Marshes, seepage bogs, wet meadows, and wet ditches. |
| Phenology | Flowering and fruiting August-October. | |
| Identification | The common name provides an important clue: the large heads face outward or even downward. Plants are annual, averaging about 2 feet tall, with the stems often rooting at lower stem nodes. The upper portions of the stems are rather erect. The ray florets are showy, and the spread flower is about 1-inch across. The leaves are opposite and not lobed or dissected (as in most Bidens species). Smooth Beggarticks (B. laevis) is very similar but the heads do not nod and the rays are 17 mm or more long, yielding a flower head up to 1.5-2 inches across. Also, that species grows only in the eastern parts of the state, with no range overlap in the state. | |
| Taxonomic Comments | None
| |
| Other Common Name(s) | Nodding Bur-marigold | |
| State Rank | S3 | |
| Global Rank | G5 | |
| State Status | | |
| US Status | | |
| USACE-agcp | OBL link |
| USACE-emp | OBL link |
