Zygophyllaceae
Tribulus

Tribulus bimucronatus Viv.

First published in Pl. Aegypt. Dec.: 9 (1830)
This species is accepted
The native range of this species is Algeria to E. Israel and Kenya, Arabian Peninsula. It is an annual and grows primarily in the desert or dry shrubland 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]

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

Distribution
Red Sea area
Morphology General Habit
Pubescent annual-Leaves 1–3.5 cm long; leaflets 3–5 pairs, ovate, 4–6 x 1.5–3 mm; stipules lanceolate, c. 1.5 mm long
Morphology Reproductive morphology Flowers Pedicel
Pedicel 2–6 mm long
Morphology Reproductive morphology Flowers Calyx
Sepals lanceolate, 2–4 mm long
Morphology Reproductive morphology Flowers Corolla
Petals yellow, 3–4 mm long
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 5(–8); filaments 2–3 mm long
Morphology Reproductive morphology Flowers Gynoecium Style
Style 0.5–1 mm long; stigma capitate
Morphology Reproductive morphology Fruits
Fruit pyramidal, 5–8 mm in diam.; pedicel 2–7 mm long; mericarps 3–6 x 1.5 mm, sparsely hairy, tuberculate, sometimes with 2 minute spinules at the base.
[FSOM]

Zygophyllaceae, M. Nabil El Hadidi (Faculty of Science, Cairo University). Flora of Tropical East Africa. 1985

Morphology General Habit
Annual olive-green pubescent herb; branches prostrate to procumbent, up to 50 cm. long; internodes 1-4 cm. long and 1.5 mm. in diameter.
Morphology Leaves
Leaves 2.5-3.5 cm. long; leaflets 3-5 pairs, ovate, 4-6 × 1.5-3 mm.; stipules lanceolate, 1.5 × 1 mm.
Morphology Reproductive morphology Flowers
Flower small, up to 8 mm. across; pedicel 3-6 mm. long, shorter than the subtending leaf.
Morphology Reproductive morphology Flowers Calyx
Sepals lanceolate, 2-4 × 1.5 mm., deciduous.
Morphology Reproductive morphology Flowers Corolla
Petals yellow, 3-4 × 2 mm.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 5(-8); filaments 2-3 mm. long; anthers 0.5 mm. long.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary 2 mm. in diameter; style 0.5-1 mm. long; stigma capitate.
Morphology Reproductive morphology Fruits
Fruit pyramidal, 3-8 mm. in diameter; stalk 2-7 mm. long; mericarps 3-6 × 1.5 mm., sparingly hairy, punctate-rugose, sometimes with 2 minute spinules at the base.
[FTEA]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • 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

  • 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

  • Kew Science Photographs

    • Copyright applied to individual images