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  1. Family: Acanthaceae Juss.
    1. Genus: Acanthus L.
      1. Acanthus ueleensis De Wild.

        This species is accepted, and its native range is South Sudan to Malawi.

    [FTEA]

    Acanthaceae (part 1), Kaj Vollesen, Flora of Tropical East Africa, 2008

    Habit
    Perennial herb to 1(–2) m tall with creeping rhizome; young stems somewhat fleshy, subglabrous to sparsely sericeous or sparsely puberulous.
    Leaves
    Leaves with petiole 0.5–2.2(–2.8) cm long; lamina elliptic to obovate in outline, largest 14–30 × 5–15 cm, varying (sometimes on the same stem) from unlobed with remotely denticulate margin to deeply lobed with oblong to triangular spine-tipped lobes, each lobe with 1–3 teeth on antrorse or on both sides, apex acuminate to cuspidate, spine-tipped, base attenuate to truncate with pair of large spines right at base and sometimes detached, sparsely puberulous (rarely pubescent) on midrib and larger veins, on lamina with scattered stiff erect bulbous-based hairs making surface rough to the touch, above sometimes without stiff hairs; alternate pair(s) of leaves absent.
    Inflorescences
    Cymes solitary, 3–15(–26) cm long (rarely with only 2–4 flowers apically on stem); rachis glabrous to puberulous, without or with 1-several pairs of sterile bracts at base; bracts green or purple-tipped or -mottled, elliptic-obovate, sparsely and minutely to densely puberulous, 2.5–4.7 cm long in middle of cyme of which the long triangular straight or recurved spine-tipped apical part 0.9–2.2(–3) cm, with 4–12 large and small teeth per side (sometimes small absent), longest 3–8 mm, small teeth inserted between large; bracteoles linear to linear-lanceolate, 1.4–2.8 cm long, entire or with 1–3 teeth per side.
    Calyx
    Calyx green or with purple apical part and sometimes veins, glabrous to puberulous; dorsal sepal ovate to elliptic, narrowing gradually or with parallel-sided apical part, 3.4–4.6 cm long, acute (rarely 2-toothed), no lateral teeth, ventral oblong-elliptic, narrowing gradually or with parallel-sided apical part, 2.6–3.8 cm long, bifid with 2 triangular teeth 1–4 mm long (these sometimes with 1–2 small additional teeth), without (very rarely with a single) lateral teeth, lateral lanceolate to narrowly ovate, 1.1–2.3 cm long, cuspidate, without (rarely with a single) lateral teeth per side.
    Corolla
    Corolla pale pink to pink or mauve (rarely white with pink veins); tube 3–6 mm long below thickened rim which is 3–6 mm long and with a broad shallow split dorsally without tooth; limb spreading, 5-lobed, 3–4.5 × 2.5–5 cm, below glabrous to sparsely puberulous, towards base with large glandular swellings, above glabrous; callus not grooved.
    Filaments
    Filaments 1.5–2.5 cm long, glabrous; anthers 7–10 mm long, without or with sparse long curly hairs on sides and without or with sessile glands dorsally.
    Fruits
    Capsule ± 2.5 cm long.
    Seeds
    Seed rhomboid, 7–8 mm long, sericeous.
    Distribution
    Range: Uganda. Range: Sudan, Congo-Kinshasa, Rwanda, Burundi, Malawi, Mozambique Range: Tanzania. Flora districts: U2 T4 T6 T7 Range: Sudan, Congo-Kinshasa, Rwanda, Burundi, Malawi, Mozambique
    Ecology
    Undergrowth in wet evergreen intermediate and montane forest, often along streams or in forest swamps, riverine forest; (700–)900–2500 m

    Images

    Distribution

    Native to:

    Burundi, Malawi, Mozambique, Rwanda, Sudan, Tanzania, Uganda, Zaïre

    Synonyms

    Other Data

    Acanthus ueleensis De Wild. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Newbould, J. [4594], Tanzania K000394420 holotype
    Newbould, J. [4594], Tanzania K000394421 isotype
    Patel, H. [8021], Mozambique K000614347
    Timberlake, J. [s.n.], Mozambique K000614513

    Bibliography

    First published in Ann. Mus. Congo Belge, Bot., sér. 5, 3: 270 (1910)

    Accepted by

    • Darbyshire, I., Kordofani, M., Farag, I., Candiga, R. & Pickering, H. (eds.) (2015). The Plants of Sudan and South Sudan: 1-400. Kew publishing, Royal Botanic Gardens, Kew.
    • Vollesen, K. (2013). Flora Zambesiaca 8(5): 1-184. Royal Botanic Gardens, Kew.
    • Vollesen, K. (2008). Flora of Tropical East Africa, Acanthaceae(1): 1-285.
    • Govaerts, R. (1995). World Checklist of Seed Plants 1(1, 2): 1-483, 529. MIM, Deurne.

    Literature

    Kew Backbone Distributions

    • Vollesen, K. (2013). Flora Zambesiaca 8(5): 1-184. Royal Botanic Gardens, Kew.

    Flora of Tropical East Africa

    • K.B. 62: 245 (2007).
    • Burrows, Pl. Nyika Plateau: 48 (2005)
    • White et al.,For. Fl. Malawi: 113 (2001)
    • Lebrun & Stork, Enum. Pl. Afr. Trop. 4: 466 (1997)
    • K.B. 24: 332 (1970)
    • Ann. Mus. Congo Bot., ser. 5, 3: 270 (1910)

    Sources

    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 Selected Plant Families 2020. 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 2020. 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