Rotheca alata (Gürke) Verdc.

First published in Kew Bull. 55: 148 (2000)
This species is accepted
The native range of this species is W. Tropical Africa to Tanzania. It is a perennial or subshrub and grows primarily in the seasonally dry tropical 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]

Verbenaceae, H. Huber, F. N. Hepper & R. D. Meikle. Flora of West Tropical Africa 2. 1963

Morphology General Habit
An erect subherbaceous plant, 2-4 ft. high
Morphology Reproductive morphology Flowers
Flowers blue-purple with the upper corolla-lobes white
Morphology Reproductive morphology Inflorescences
Inflorescence a thyrsoid panicle.
[FWTA]

Verbenaceae, B. Verdcourt. Flora of Tropical East Africa. 1992

Morphology General Habit
Erect herb or subshrub 0.6–1.5 m. tall; stems slender to quite stout, 4–6-angled or narrowly winged, glabrous or pubescent, sometimes hollow and chambered.
Morphology Leaves
Leaves opposite or in whorls of 3, elliptic to oblanceolate, oblanceolate-oblong or rarely linear-lanceolate, 5.5–25(–30) cm. long, 1.3–7 cm. wide, acuminate at the apex, cuneate to rounded, truncate or subcordate at the base, entire to sharply toothed in upper third, glabrous or venation pubescent beneath or rarely discolorous and ± pubescent; sessile or petiole ± 2 mm. long.
Morphology Reproductive morphology Inflorescences
Inflorescence a terminal many-flowered thyrsoid panicle, 12–30 cm. long, composed of many cymes with some lower axillary ones as well; peduncle obsolete; secondary peduncles 2–4.5 cm. long; bracts leafy, ovate, 2.5 cm. long becoming smaller and lanceolate upwards, 7 mm. long; secondary bracts linear-oblong, 3–6 mm. long.
Morphology Reproductive morphology Flowers Calyx
Calyx glabrous or pubescent; tube broadly cupular, 1.5–2 mm. long; lobes ovate-triangular, obtuse.
Morphology Reproductive morphology Flowers Corolla
Corolla white, the limb lilac inside with lower lip blue or violet, sometimes blotched white; tube 6 mm. long; lobes oblong or obovate, 8.5 mm. long, 3.5–4.5 mm. wide, obtuse or truncate.
Morphology Reproductive morphology Fruits
Fruits depressed, 5.2 mm. long, 8 mm. wide.
Habitat
Brachystegia-Pterocarpus woodland; 1400 m.
Distribution
T4
[FTEA]

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 West Tropical Africa

    • Flora of West Tropical Africa
    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • Herbarium Catalogue Specimens

    • 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