Bidens bidentoides
species of plant
Bidens bidentoides (formerly Diodonta bidentoides), commonly called swamp beggar's-ticks and delmarva beggarticks, is an annual, herbaceous, flowering plant in the Asteraceae family. It is native to the northeastern and east-central parts of the United States, the coastal plain of the States of Maryland, Delaware, Pennsylvania, and New Jersey plus the region around the Hudson River estuary in New York.
Description
Bidens bidentoides is an annual herb that typically grows between 10 and 90 cm (0.33 and 2.95 ft) tall. The opposite, lanceolate, variably toothed leaves are 4–16 cm long and 0.3–3 cm wide. Each flower usually has no ray florets, but there can be up to five. There are between 6 and 30 yellowish disk florets.
It typically blooms in September, but can sometimes bloom in August or October.
Distribution and habitat
Bidens bidentoides is native to Delaware, Maryland, New Jersey, New York and Pennsylvania. The plant grows on the borders of streams and estuaries at an elevation of 0–10 metres from sea level.
Conservation
As of November 2024, NatureServe listed Bidens bidentoides as Vulnerable (G3) worldwide.
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The subject matters to the science & nature register because the source frames it as species of plant. Its deeper value depends on whether names, dates, institutions and citations support that framing.
The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Sep 14, 2026. The linked authority identifier is Q15591251. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2024.
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This entry incorporates text from “Bidens bidentoides” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.