Asteraceae

Tagetes L.

First published in Sp. Pl.: 887 (1753)
This genus is accepted
The native range of this genus is Subtropical America.

Descriptions

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

Morphology General Habit
Annual or perennial herbs, strongly aromatic when crushed
Morphology Leaves
Leaves opposite or alternate, usually pinnate, sometimes simple, gland-dotted
Morphology Reproductive morphology Inflorescences Capitulum
Capitula solitary or in dense corymbs, terminal, heterogamous; phyllaries in a single row (rarely in 2 rows), the margins connate, glandular; receptacle epaleate
Morphology Reproductive morphology Flowers Florets
Ray florets few, in a single series, female; style branches filiform; disc florets few to many, bisexual; anthers with an acute appendix at apex, style branches subacute and pilose
Morphology Reproductive morphology Fruits
Achenes black, narrowly cylindrical; pappus of 1–3 setae and 7–9 much shorter scales with ciliate margins.
[FTEA]

M. Thulin. Flora of Somalia, Vol. 1–4 [updated 2008] https://plants.jstor.org/collection/FLOS

Distribution
Some 40 species in tropical and warm temperate America.
Morphology General Habit
Annual or perennial herbs, glandular
Morphology Leaves
Leaves opposite near base of plant, alternate higher up
Morphology Reproductive morphology Inflorescences Capitulum
Capitula solitary or in leafy cymes, heterogamous; involucre of connate bracts; receptacle epaleate
Morphology Reproductive morphology Flowers Florets
Ray florets few, functionally female, fertile; disk florets bisexual, fertile
Morphology Reproductive morphology Fruits
Achenes often flattened; pappus of 3–10 small scales.
[FSOM]

Ghazanfar, S. A., Edmondson, J. R. & Hind, D. J. N. (Eds). (2019). Flora of Iraq, Volume 6: Compositae.Kew Publishing

Morphology General Habit
Erect or spreading, annual or perennial, branched, glabrous or glabrescent herbs
Morphology Leaves
Leaves opposite, usually pinnate, rarely simple, toothed, with scattered oil glands
Morphology Reproductive morphology Inflorescences
Inflorescence cymose, corymbose or solitary, long-pedunculate
Morphology Reproductive morphology Inflorescences Capitulum
Capitula small to large, heterogamous and radiate, rarely homogamous and discoid; involucre cylindrical; phyllaries connate, uniseriate, equal, with c. 2 rows of oil glands; receptacle flat, naked, or with minutely fringed pits
Morphology Reproductive morphology Flowers Corolla
Corollas yellow or orange, rarely white; ray florets female, fertile, ray limb entire to 3-lobed, spreading; disc florets hermaphrodite, fertile, regular, tubular, 5-lobed; style-arms truncate, penicillate or shortly appendiculate
Morphology Reproductive morphology Fruits
Achenes linear, oblong-oblanceolate to clavate, compressed and ± angular or terete, glabrous or pubescent, with a callus at base; pappus of 3–10 scales, unequal, variably connate, sometimes 1–2(–5) long-aristate and much exceeding rest, which are short and truncate or rounded.
Distribution
A genus of about 50 species, distributed throughout the warm regions of the New World; 2 or 3 species are widely cultivated.
Etymology
Tagetes (possibly from Tages, the name of an Etruscan or Roman God).
[FIQ]

Sources

  • Flora of Iraq

    • Flora of Somalia
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Flora of Somalia

    • Flora of Somalia
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Flora of Tropical East Africa

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

  • Herbarium Catalogue Specimens

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. 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

  • World Checklist of Vascular plants (WCVP)

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. 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