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This genus is accepted, and its native range is NE. Tropical Africa to Kenya and Indian Subcontinent.
Ecbolium tanzaniense

[FZ]

Flora Zambesiaca Acanthaceae (part 2) by Iain Darbyshire, Kaj Vollesen and Ensermu Kelbessa

Morphology General Habit
Erect perennial or shrubby herbs or shrubs; stems articulated with transverse lines at nodes, usually swollen above nodes and with numerous longitudinal ribs.
Morphology Leaves
Leaves opposite, with short often inconspicuous cystoliths, margin entire, usually recurved.
Morphology Reproductive morphology Flowers
Flowers usually sessile, solitary or 3(7) per bract, in dense strobilate terminal spiciform cymes, axes often flattened; bracts papery, usually caducous, pale to yellowish green (rarely purplish), with straight non-pungent tip, usually with inconspicuous to ± invisible venation; bracteoles 2, subulate to narrowly triangular.
Morphology Reproductive morphology Flowers Calyx
Calyx deeply divided into 5 equal lanceolate to narrowly triangular acuminate to cuspidate lobes.
Morphology Reproductive morphology Flowers Corolla
Corolla livid yellowish to bluish green or turquoise green (rarely white to lilac), upper part of tube usually pubescent outside; tube long, cylindric, slightly widening upwards, straight; lower lip with 3 horizontal narrowly elliptic to circular rounded lobes, middle one widest; upper lip with one linear-lanceolate 2-veined bifurcate lobe held erect or curved back.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 2, held erect and parallel under upper lip, inserted near base of lower lip, usually 1–3 mm long, glabrous; anthers usually 2–3 mm long, bithecous, medifixed, held parallel with filament, thecae oblong, subequal, curved, rounded at both ends.
Morphology Reproductive morphology Flowers Gynoecium Style
Style filiform, glabrous or hairy near base (rarely over whole length); stigma lobes equal, broadly elliptic, rounded, erect; ovary with 2 ovules per locule.
Morphology Reproductive morphology Fruits
Capsule 2–4-seeded, club-shaped, apiculate; retinaculae strong.
Morphology Reproductive morphology Seeds
Seed discoid, cordiform in outline, from smooth to densely tuberculate, usually with a broad raised rim with entire to jagged edge.
Distribution
A genus of 22 species, 12 in eastern and southern Africa (10 endemic), 7 on Madagascar and the Comoro Is. (all endemic), 3 in southern Arabia (1 endemic), 3 in India (2 endemic), one of which extends to Malaysia (probably introduced).

[FSOM]

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

Morphology General Habit
Shrubs or perennial herbs
Morphology Leaves
Leaves simple, entire
Morphology Reproductive morphology Inflorescences
Flowers in dense terminal spikes; bracts usually soon falling, not pungent; bracteoles 2, narrow
Morphology Reproductive morphology Flowers Perianth
Calyx deeply 5-lobed; lobes equal. Corolla yellowish to bluish green, sometimes white, mauve, dull blue or pale purple, 2-lipped; tube cylindric, usually much longer than the lobes; upper lip linear-lanceolate, 2-lobed; lower lip 3-lobed
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 2, held erect under upper lip; anthers 2-celled, curved, parallel with filament
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary 2-celled with 2 ovules per cell; style filiform, glabrous or ± hairy; stigma-lobes 2 equal, elliptic. Capsule club-shaped, 2–4-seeded
Morphology Reproductive morphology Seeds
Seeds flattened, smooth to densely tuberculate.
Distribution
Genus of about 20 species in eastern and southern Africa, Madagascar and the Comoro Is, southern part of the Arabian Peninsula, and in India and Malaysia.

Native to:

Angola, Assam, Bangladesh, Cape Provinces, Comoros, Djibouti, Eritrea, Ethiopia, India, Kenya, Madagascar, Malawi, Mozambique, Myanmar, Namibia, Nepal, Northern Provinces, Oman, Saudi Arabia, Somalia, Sri Lanka, Sudan, Swaziland, Tanzania, Vietnam, Yemen, Zimbabwe

Introduced into:

Malaya

Ecbolium Kurz appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Drummond, R.B. [2293], Tanzania 4230.000

First published in J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 40: 75 (1871)

Accepted by

  • Govaerts, R. (2001). World Checklist of Seed Plants Database in ACCESS E-F: 1-50919.

Literature

Flora Zambesiaca

  • in J. Asiat. Soc. Bengal, 2, Nat. Hist. 40: 75 (1871).
  • —Vollesen in Kew Bull. 44: 638–680 (1989).

Flora of Somalia

  • Flora Somalia, (2000) Author: by M. Thulin [updated by M. Thulin 2008]
  • Vollesen in Kew Bull. 44: 638–680 (1989).

Flora Zambesiaca
Flora Zambesiaca
http://creativecommons.org/licenses/by-nc-sa/3.0

Flora of Somalia
Flora of Somalia
http://creativecommons.org/licenses/by-nc-sa/3.0

Herbarium Catalogue Specimens

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0