Flower ID: IMG_3188.JPG-09-01-2019 Flower name (scientific): Bidens discoidea (Torrey & A. Gray) Britton PY: 1893. Pronunciation guide: (phonetic spelling) BI-denz dis-coid-EE-ah Flower name (common): Discoid Beggarticks Family name (common): Aster Family name (scientific): Asteraceae Scientific name origin: Genus: From the Latin bis for two and dens a tooth, hence two teeth. Referencing the bristles (two-awned) on the achene (dry one-seeded fruit). Specific epithet: From the Latin for without rays, referencing the fact that the flower has no ray-florets. Common name origin: Discoid refers to a composite flower, having only disc-florets and no ray-florets. Beggarticks is a common name applied to more than one of the Bidens species. The name beggarticks probably alludes to the irritant weedy nature of the plants and the clinging character of the achenes, attributes appropriate to a beggar. Flower description: Size: 0.1 to 0.3 inches (0.3 to 0.8 cm) Petal count: 0 ray florets; disc florets typically 15 to 20. Color: yellow Other: flower arrangement, Solitary Plant description: Size: 12 to 32 inches (30 to 81 cm) Stem hairy: Other: Leaf description: attachment is opposite, type is compound Size: The leaves in outline are typically about 3 to 8 cm long and 1 to 3 cm wide. The individual leaflets are typically about 2 to 5 cm long and 0.5 to 2 cm wide. The terminal leaflet may range up to about 10 cm in length and 3 cm wide. Lateral leaflets are typically 2.5 to 3.8 cm long and 1.3 to 2 cm wide. Color: Hairy: Other: Shape: leaf, usually 3-foliolate, leaflet, lance-ovate to lanceolate (FNA) Origin (native, introduced, invasive): Native Status (common, uncommon, threatened, rare): Common Bloom time (typical): August to September Cycle (annual, biennial, perennial): Annual Habitat: Wet soils, streambanks, swamps, marshes, ponds, shores, sun or part shade. Fruit: Seed: Importance to wildlife: Similar species (if any): Some of the Bidens are similar to each other. Flower head size, number of awns on the seed, number of bracts, presence or absence of ray florets, and leaf differences can help ID the seperate species. Some data for Bidens species: B. cernua flower head 25 - 51 mm, 4 awns commonly (2 - 4); B. connata flower 6 - 13 mm, 2 - 4 awns; B. discoidea flower 3 - 8 mm, 2 awns; B. frondosa flower 19 mm, 2 awns; B. trichosperma flower 38 - 51 mm, 2 awns; B. tripartita flower 13 - 19 mm, 3 awns; B. vulgata flower 25 mm, 2 awns. Species B. beckii is aquatic, species B. aristosa is uncommon in Wisconsin, and species B. pilosa can be identified by its white to pinkish ray florets. The flowers of B. connata are probably the closest lookalike to Bidens discoidea. Ethnobotany: Latitude: 44.800013 Longitude: -91.507493 Altitude: 228.50 Distribution: In Wisconsin: (Ashland, Barron, Bayfield, Buffalo, Calumet, Chippewa, Columbia, Crawford, Douglas, Eau Claire, Forest, Grant, Green Lake, Iowa, Jackson, La Crosse, Langlade, Lincoln, Marathon, Oconto, Outagamie, Polk, Portage, Richland, Rusk, Sauk, Sawyer, Shawano, Taylor, Vilas, Waupaca, Waushara, Wood) Click here for distribution map In US: (AL, AR, CT, DC, DE, FL, GA, IA, IL, IN, KY, LA, MA, MD, ME, MI, MN, MO, MS, NC, NH, NJ, NY, OH, OK, PA, RI, SC, TN, TX, VA, VT, WI, WV) In Canada: (NB, NS, ON, QC) References: Synonym(s): Bidens tenuissima Greene Basionym: Coreopsis discoidea Torrey & A. Gray, Fl. N. Amer. 2: 339. 1842. Homotypic Synonym(s): Heterotypic Synonym(s): Autonym: na