Asteraceae

Artemisia L.

First published in Sp. Pl.: 845 (1753)
This genus is accepted
The native range of this genus is Temp. & Subtropical Northern Hemisphere, S. Tropical & S. Africa, W. & S. South America.

Descriptions

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

Morphology General Habit
Annual or perennial herbs and shrubs
Morphology Leaves
Leaves usually aromatic, variously dissected, rarely entire
Morphology Reproductive morphology Inflorescences Capitulum
Capitula many, pendulous, usually in a large panicle but occasionally much reduced and racemose or spiciform, disciform; phyllaries few, in few series, subequal; receptacle flat or conical, naked, occasionally pilose
Morphology Reproductive morphology Flowers Florets
Outer florets female, tubular, 2–3-toothed or truncate, usually oblique at the mouth, sometimes filiform; inner florets hermaphrodite or functionally male, tubular, 5-lobed; anthers obtuse at the base, with lanceolate to subulate distal appendage; style branches truncate or penicillate
Morphology Reproductive morphology Fruits
Achenes obovoid, sub-cylindrical, usually glabrous; pappus absent.
[FTEA]

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

Morphology General Habit
Annual, biennial or perennial low shrubs with a taproot and woody horizontal rootstock, much-branched, often aromatic. Leaves petiolate or upper sessile, alternate, unarmed, simple to shallowly or deeply toothed or incised or lobed to pinnatisect
Morphology Reproductive morphology Inflorescences
Inflorescence paniculate or racemose
Morphology Reproductive morphology Inflorescences Capitulum
Capitula heterogamous; involucre ovoid to campanulate; phyllaries 2–4(–6)-seriate, imbricate, hairy or glabrous, inner with scarious margins or scarious
Morphology Reproductive morphology Flowers Receptacle
Receptacle convex, conical, glabrous or pilose
Ray
Ray florets pistillate, corolla narrow tubular, 2–3(–6)-toothed, ± oblique, eligulate; style exserted, 2-fid; disc florets bisexual, functionaly male, or sterile; corolla tubular to campanulate, 5-toothed; style exserted or included, 2-fid, or fimbriate
Morphology Reproductive morphology Fruits
Achenes oblong-obovoid, striate or smooth; pappus absent or sometimes achenes with a minute annulus or scarious ring.
Distribution
About 540 species (in its wider circumscription including, e.g., Seriphidium, which is supported by all recent systematic studies), distributed throughout the northern hemisphere and extending to southern Africa, South America and Pacific islands.
[FIQ]

Sources

  • Flora of Iraq

    • 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