Holubia Oliv.

First published in Hooker's Icon. Pl. 15: t. 1475 (1884)
This genus is accepted
The native range of this genus is Zimbabwe to S. Africa.

Descriptions

Pedaliaceae, H. D. Ihlenfeldt. Flora Zambesiaca 8:3. 1988

Morphology General Habit
Erect annual (sometimes biennial) herb with spreading branches, 30–75 cm. tall with square stem.
Morphology Leaves
Leaves opposite, long petiolate; lamina subsucculent, circular to ovate, slightly lobed or sinuate, truncate or slightly cordate at the base, sparingly glandular below, glabrous above.
Morphology Reproductive morphology Flowers
Flowers solitary, yellow-green to white; corolla tube cylindrical at the middle, funnel-shaped at the mouth, with a large basal sac-like spur; limb spreading, obscurely bilabiate.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 4, inserted low down in the corolla tube; thecae divergent.
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary bilocular, loculi undivided; ovules biseriate in each loculi, c. 8 in each loculi, ascending.
Morphology Reproductive morphology Fruits
Fruit indehiscent, more or less rectangular in cross section, with a broad parchment-like wing on each of the four edges, rotund to circular in lateral view; mesocarp not spongy; the veins of the wing forming a distinct, usually dark coloured network; c. 8 seeds in each loculus.
[FZ]

Sources

  • Flora Zambesiaca

    • Flora Zambesiaca
    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 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 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0