Denekia capensis Thunb.

First published in Prodr. Pl. Cap. 2: 153 (1800)
This species is accepted
The native range of this species is S. Tropical & S. Africa.

Descriptions

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

Morphology General Habit
Annual (?biennial) herb, erect, 5–40 cm high, branched from the base; stems sparsely villous, glabrescent, glandular.
Morphology Leaves
Leaves dimorphic, basal ones oblanceolate with base cuneate into a winged pseudopetiole, cauline leaves sessile, oblong to slightly oblanceolate, 1–5 cm long(–15 cm in basal leaves), 0.4–1 cm wide(–1.7 cm in basal leaves), base semi-amplexicaul to auriculate, margins dentate or denticulate, apex acute or obtuse and mucronate, arachnoid-lanate beneath, pubescent but glabrescent above.
Morphology Reproductive morphology Inflorescences Capitulum
Capitula 3–5 mm long, in terminal lax panicles or corymbs; stalks of individual capitula 1–6 mm long, glandular with stalked glands; phyllaries lanceolate, 2.5–3 mm long, 0.4–0.6 mm wide, with membranous margins, acute and fimbriate, glandular.
Morphology Reproductive morphology Flowers Florets
Florets mauve or blue; outer florets with tube 1.5–2 mm long, sparsely glandular, lobes 0.5–0.7 mm long; style 1.7–1.8 mm long, included, with papillose branches; inner florets with tube slightly widening, 1.5–2 mm long, lobes 0.7–1 mm long and usually spreading or reflexed; anthers 1.3–1.4 mm long; style ± 2 mm long, with short clavate branches, densely papillose.
Morphology Reproductive morphology Fruits
Achenes of outer florets narrowly ovoid, 0.5–0.7 mm long, sparsely hairy; of inner florets very narrowly cylindric, 1–1.2 mm long, < 0.1 mm in diameter; pappus absent in outer florets; in inner florets of a single seta 2–2.5 mm long, the distal 0.8 mm plumose, those of the individual florets grouped in the centre of the capitulum.
Figures
Fig. 75 (page 366).
Habitat
Streamside mud, swamps, seasonally flooded depressions; 900 m
Distribution
T8
[FTEA]

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]

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 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
  • 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