Bidens ugandensis (S.Moore) Sherff


Cite taxon page as 'WFO (2020): Bidens ugandensis (S.Moore) Sherff. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000081448. Accessed on: 09 Apr 2020'

Morphology

Ray florets yellow to orange, neuter, 8–16, tube 2–2.5 mm long, rays (10–)20–30x(3–)8–12 mm; disc florets yellow to golden yellow, 6–8 mm long.

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    Achenes black, ellipsoid, 4.5–11.5 mm long, strigose; aristae 2, 0.5–2 mm long, divergent, nude or with a few retrorse barbs near the apex.

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    Leaves simple and narrowly elliptic to linear, or pinnately 3–7-lobed to bipinnatifid with linear segments, 3–15 cm long, the leaf or segments 1–6(–15) mm wide, sessile, apex acute, glabrous except for the revolute margins which have 2 rows of short scabrid hairs, rarely leaf scabrid; pseudo-petiole to 7.5 cm long.

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    Capitula terminal and few in lax cymes; stalks of individual capitula to 12 cm long; involucre 6–13 mm long; outer phyllaries green, 8–16, glabrous to pubescent, the inner 8–13 phyllaries with scarious margins, glabrous or nearly so; paleae thick, yellowish, 6–9 mm long.

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    Perennial or rarely annual herb 30–135 cm high, usually with several erect stems from the tuberous rootstock, stems little branched, sparsely pilose.

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    Fig. 171 (page 791).

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     Information From

    Compositae
    CC0 1.0 Universal (CC0 1.0). https://creativecommons.org/publicdomain/zero/1.0
    • A CC0 1.0 Universal (CC0 1.0).
    Plants Of the World Online Portal - FTEA
    https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
    http://www.plantsoftheworldonline.org/terms-and-conditions
    • B
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • C CC0 1.0 Universal (CC0 1.0).