Orobanchaceae
Striga

Striga angustifolia (D.Don) C.J.Saldanha

First published in Bull. Bot. Surv. India 5: 70 (1963)
This species is accepted
The native range of this species is S. Tanzania to S. Tropical Africa, S. Arabian Peninsula, Indian Subcontinent to Indo-China, Hainan. It is a hemiparasitic annual or biennial and grows primarily in the seasonally dry tropical biome.

Descriptions

Scrophulariaceae, D. Philcox. Flora Zambesiaca 8:2. 1990

Morphology General Habit
Erect annual or biennial herb 15–50 cm. high, usually simple or erect-branched, stems stiff, ± pubescent to densely covered with very short hispid hairs.
Morphology Leaves
Leaves opposite to nearly so, alternate above, linear to linear-lanceolate, 1–4 mm. wide, acute, finely pubescent.
Morphology Reproductive morphology Flowers
Flowers axillary, solitary, alternate, forming long lax terminal spikes; lower bracts leaf-like, the upper linear to subulate; bracteoles c. 4 mm. long, subulate.
Morphology Reproductive morphology Flowers Calyx
Calyx 10–12 mm. long, tubular, very prominently 15-ribbed, 5-toothed, finely pubescent; teeth 3–5 mm. long, linear-lanceolate, elongating in fruit.
Morphology Reproductive morphology Flowers Corolla
Corolla white or cream with greenish tube, pubescent outside; tube abruptly curved just above calyx teeth, inflated above; upper lip obovate, emarginate or truncate; lobes of lower lip 6–8 x 5 mm., obovate, rounded.
Morphology Reproductive morphology Fruits
Capsule ovoid, shorter than calyx, apiculate, valves sharply recurved after dehiscence.
[FZ]

Scrophulariaceae, S.A. Ghazanfar, F.N. Hepper & D. Philcox. Flora of Tropical East Africa. 2008

Type
Type: Nepal, Wallich s.n. (K!, holo.)
Morphology General Habit
Erect annual or biennial herb, 15–50 cm high, with usually erect, simple branches.
Morphology Stem
Stems stiff, ± pubescent to densely covered with very short hispid hairs
Morphology Leaves
Leaves opposite to subopposite, alternate above, linear to linear-lanceolate, 10–20 mm long, 1–4 mm wide, acute, entire, finely pubescent
Morphology Reproductive morphology Flowers
Flowers alternate, axillary, solitary, forming long lax terminal spikes; lower bracts leaf-like, the upper linear to subulate; bracteoles subulate, ± 4 mm long
Morphology Reproductive morphology Flowers Calyx
Calyx tubular, 10–12 mm long, very prominently 15-ribbed, 5-toothed, finely pubescent; teeth linear-lanceolate, 3–5 mm long, elongating in fruit
Morphology Reproductive morphology Flowers Corolla
Corolla white or cream with greenish tube, pubescent outside; tube 12–15 mm long, abruptly curved just above calyx teeth and inflated above; upper lip obovate, emarginate or truncate; lobes of lower lip obovate, 6–8 mm long, 5 mm wide, rounded
Morphology Reproductive morphology Fruits
Capsule ovoid 4–5 mm long, ± 3 mm in diameter, apiculate, valves recurved sharply after dehiscence.
Ecology
Wet grassland, abandoned cultivations, Brachystegia– Uapaca woodland; 800–900 m
Conservation
Least Concern (LC); common and widespread
Distribution
Range: Zambia, Malawi, Mozambique, Zimbabwe, India, Nepal, Sri Lanka Flora districts: 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]

Uses

Use
None recorded on specimens from our area
[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

    • '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

  • Kew Science Photographs

    • Copyright applied to individual images