Asteraceae
Bidens

Bidens crocea Welw. ex O.Hoffm.

First published in Bol. Soc. Brot. 10: 177 (1892)
This species is accepted
The native range of this species is Tanzania to Angola.

Descriptions

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: not threatened. Confidence: confident
[AERP]

Compositae, H. Beentje, C. Jeffrey & D.J.N. Hind. Flora of Tropical East Africa. 2005

Morphology General Habit
Perennial herb 0.5–1.2 m high, rarely annual; stem single or several, glabrous, from thickened woody rootstock.
Morphology Leaves
Leaves pinnatifid with 3–5 segments or bipinnatifid with few side lobes, 5–15 cm long, segments linear, 1–6 cm long, 0.5–2 mm wide, glabrous; petiole 0.5–7 cm long.
Morphology Reproductive morphology Inflorescences Capitulum
Capitula terminal and solitary; stalks of individual capitula to 12 cm long; involucre 8–10 mm long; outer phyllaries 6–8, green, linear, glabrous or sparsely pubescent, the inner phyllaries 8, oblong, glabrous but for the apex; paleae linear.
Morphology Reproductive morphology Flowers Florets
Ray florets golden yellow, neuter, 5–8, tube glabrous, rays 10–20x3–5 mm; disc florets yellow, 3.8–5 mm long, glabrous or sparsely puberulous.
Morphology Reproductive morphology Fruits
Achenes dark brown or black, flat, 9–18 mm long, glabrous or pilose on margin, curved near the apex when fully mature; aristae 2(–3), to 4.3 mm long, retrorsely barbed.
Habitat
pen woodland; 1650–1900 m
Distribution
T3 T4 T7
[FTEA]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • Flora of Tropical East Africa

    • Flora of Tropical East Africa
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Herbarium Catalogue Specimens

    • 'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2025. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2025. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0