Asteraceae
Thymophylla

Thymophylla tenuiloba (DC.) Small

First published in Fl. S.E. U.S.: 1295, 1341 (1903)
This species is accepted
The native range of this species is SE. U.S.A. to NE. Mexico. It grows primarily in the subtropical biome.

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
Annual or perennial herb 10–30 cm high; stems puberulous.
Morphology Leaves
Leaves usually alternate, pinnatifid, 1.5–3 cm long, the 9–13 segments filiform, aromatic.
Morphology Reproductive morphology Inflorescences Capitulum
Capitula terminal and solitary; peduncle 3–5 cm long; involucre 5–6 mm long, 1-seriate.
Morphology Reproductive morphology Flowers Florets
Ray florets yellow, ray 3–4 mm long; disc florets yellow, ± 2.5 mm long.
Morphology Reproductive morphology Fruits
Achenes ± 3 mm long; pappus of 10 oblong scales, each with 3 aristae at apex.
[FTEA]

George R. Proctor (2012). Flora of the Cayman Isands (Second Edition). Royal Botanic Gardens, Kew

Morphology General Habit
Small diffusely branched perennial to 20 cm tall with puberulous stems
Morphology Leaves
Leaves alternate, elliptic in outline, 1–2 × 1 cm, pinnatisect into 9–12 filiform spinulose-tipped segments bearing oval glands
Morphology Reproductive morphology Inflorescences Peduncles
Peduncles 3–4 cm long; involucres top-shaped, with 12–15 bracts, connate to near the ciliate or erose tips, each with 1–4 glands
Ray
Ray-flowers 11–15, the ligules 3–4 mm long, bright yellow; disc-flowers 50–100
Morphology Reproductive morphology Fruits
Achenes obpyramidal, black, 2.5–3 mm long, striate, sparsely pubescent; pappus of up to 120 small scales, these 3-awned.
Distribution
Grand Cayman. Native of Texas and Mexico; introduced and more or less naturalised in Florida, the Bahamas, the Lesser Antilles, and also in Africa and Asia.
[Cayman]

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

  • Flora of the Cayman Islands

    • Flora of the Cayman Islands
    • 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