Campanulaceae
Wahlenbergia

Wahlenbergia erecta (Roth ex Schult.) Tuyn

First published in Fl. Males. 6: 113 (1960)
This species is accepted
The native range of this species is Nigeria, Eritrea to S. Tropical Africa, India to Bangladesh, Sumatera. It is an annual and grows primarily in the seasonally dry tropical biome.

Descriptions

Campanulaceae, M. Thulin. Flora Zambesiaca 7:1. 1983

Morphology General Habit
Annual erect herb, 6–35 cm. tall, with main stem usually distinct nearly to the top of the plant, hirsute with mixed hairs of different length.
Morphology Branches
Branches usually numerous, spreading.
Morphology Leaves
Leaves 8–27 x 3–8 mm., alternate, sessile, lanceolate to narrowly ovate or ovate (the lowest only), acute, with cuneate to truncate base, ± hirsute; margin incrassate, undulate–dentate; midvein prominent beneath, lateral veins almost invisible.
Morphology Reproductive morphology Inflorescences
Inflorescence lax, ± pyramidal; pedicels 3–12(20) mm. long, hirsute with mixed hairs of different length, rarely glabrous.
Morphology Reproductive morphology Flowers Hypanthium
Hypanthium hemispherical, 10–nerved, hirsute.
Morphology Reproductive morphology Flowers Calyx
Calyx–lobes 1–5–3 mm. long, usually abruptly broadened at the base, hirsute in lower part only.
Morphology Reproductive morphology Flowers Corolla
Corolla 1·5–2·5 mm. long, ± pale blue or white, split almost to the base into linear–lanceolate lobes, ± hirsute outside.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens with filament–bases usually narrowly triangular, sometimes slightly broadened, glabrous or sparsely and shortly ciliate; anthers 0·4–0·7 mm. long.
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary 3–locular, semi–inferior; style c. as long as the corolla, slightly thickened just below the 3 short lobes, eglandular, glabrous below.
Morphology Reproductive morphology Fruits
Capsule 3–locular, 10–nerved; valves 3, 1·2–1·6 mm. long.
Morphology Reproductive morphology Seeds
Seeds 0·5–0·6 mm. long, elliptic–oblong in outline, compressed; testa almost smooth.
[FZ]

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]

Campanulaceae, Mats Thulin (University of Uppsala). Flora of Tropical East Africa. 1976

Morphology General Habit
Annual erect herb, 6–35 cm. tall, with main stem usually distinct nearly to the top of the plant, hirsute with mixed hairs of different length.
Morphology Branches
Branches usually numerous, spreading.
Morphology Leaves
Leaves sessile, lanceolate to narrowly ovate or ovate (the lowest only), 8–27 mm. long, 3–8 mm. wide, acute, with cuneate to truncate base, ± hirsute; margin cartilaginous, undulate-dentate; midvein prominent beneath, lateral veins almost invisible.
Morphology Reproductive morphology Inflorescences
Inflorescence lax, ± pyramidal; pedicels 3–12(–20) mm. long, hirsute with mixed hairs of different length, rarely glabrous.
Morphology Reproductive morphology Flowers Hypanthium
Hypanthium hemispherical, 10-nerved, hirsute.
Morphology Reproductive morphology Flowers Calyx
Calyx-lobes 1.5–3 mm. long, usually abruptly broadened at the base, hirsute in lower part only.
Morphology Reproductive morphology Flowers Corolla
Corolla 1.5–2.5 mm. long, ± pale blue or white, split almost to the base into linear-lanceolate lobes, ± hirsute outside.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens with filament-bases usually narrowly triangular, sometimes slightly broadened, glabrous or sparsely and shortly ciliate; anthers 0.4–0.7 mm. long.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary 3-locular, semi-inferior; style about as long as the corolla, slightly thickened just below the 3 short lobes, eglandular, glabrous below.
Morphology Reproductive morphology Fruits
Capsule 3-locular, 10-nerved; valves 3, 1.2–1.6 mm. long.
Morphology Reproductive morphology Seeds
Seeds elliptic-oblong in outline, compressed, 0.5–0.6 mm. long; testa almost smooth.
Figures
Fig. 5/F, G, p. 28.
Habitat
Grassland or deciduous woodland, waste places, cultivations, often in sandy soil; 800–1500(–2300) m.
Distribution
K2 K4 K6 T2 T3 T5 T7 T8
[FTEA]

Sources

  • Angiosperm Extinction Risk Predictions v1

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

  • Flora Zambesiaca

    • Flora Zambesiaca
    • 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

  • 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