1. Family: Rutaceae Juss.
    1. Genus: Zanthoxylum L.
      1. Zanthoxylum humile (E.A.Bruce) P.G.Waterman

        This species is accepted, and its native range is Zimbabwe to Mozambique and Mpumalanga.

    [FZ]

    Rutaceae, F. A. Mendoça. Flora Zambesiaca 2:1. 1963

    Habit
    Deciduous shrub up to 2 m. high; branches and rhachis of the leaves cinereous-tomentose or pubescent or glabrescent, ± densely aculeate, aculei on the stems straight or ± recurved, 2–8 mm. long, greyish or reddish, those of the rhachis recurved and up to 2 mm. long; branches with terminal buds protected by cottony scales.
    Leaves
    Leaves 4–16 cm. long; rhachis terete, rarely slightly grooved above.
    Leaflets
    Leaflets chartaceous, sessile, (4) 6–12 (14)-jugate, opposite or alternate, the distal ones smaller, the terminal one usually present (rarely aborted), 0·8–2·5 × 0·5–1·2 cm., elliptic to broadly elliptic or ovate, slightly asymmetric, with pellucid gland-dots in the marginal sinuses only, obtuse or rounded at the apex, margin crenulate, rounded or almost cuneate at the base; lateral nerves 3–4 pairs.
    Inflorescences
    Inflorescence of racemes 1–3 cm. long, borne on branches of the previous year before or with the leaves but not or very rarely in the axils of the latter.
    Flowers
    Flowers 5-merous. Female flowers: sessile or subsessile; staminodes 5, reduced to the abortive anthers at the base of a short gynophore; ovary c. 1 mm. long, ovoid, oblique, 1-locular, 2-ovulate; style 1 mm. long, lateral, incurved; stigma subglobose. Male flowers: pedicels 1–1·5 mm. long; sepals 5, slightly united at the base, 0·6 mm. long, persistent on the fruit; petals 5, 3–4 × 1–1·3 mm., imbricate, narrowly elliptic; stamens 5, with linear filaments c. 3 mm. long; anthers 1·5 mm. long, narrowly oblong, basifixed, deeply 2-lobed at the base and laterally dehiscent; ovary vestigial, on a short gynophore.
    Male
    Male flowers: pedicels 1–1·5 mm. long; sepals 5, slightly united at the base, 0·6 mm. long, persistent on the fruit; petals 5, 3–4 × 1–1·3 mm., imbricate, narrowly elliptic; stamens 5, with linear filaments c. 3 mm. long; anthers 1·5 mm. long, narrowly oblong, basifixed, deeply 2-lobed at the base and laterally dehiscent; ovary vestigial, on a short gynophore.
    Female
    Female flowers: sessile or subsessile; staminodes 5, reduced to the abortive anthers at the base of a short gynophore; ovary c. 1 mm. long, ovoid, oblique, 1-locular, 2-ovulate; style 1 mm. long, lateral, incurved; stigma subglobose.
    Fruits
    Fruit 4–5 mm. in diam., subglobose, gland-dotted.
    Seeds
    Seed black, shiny.

    Distribution

    Native to:

    Mozambique, Northern Provinces, Zimbabwe

    Zanthoxylum humile (E.A.Bruce) P.G.Waterman appears in other Kew resources:

    First published in Taxon 23: 364 (1975)

    Accepted by

    • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa an annotated checklist Strelitzia 14: 1-1231. National Botanical Institute, Pretoria.

    Literature

    Kew Backbone Distributions
    • Exell, A.W., Fernandes, A. & Wild, H. (eds.) (1963). Flora Zambesiaca 2(1): 1-351. Royal Botanic Gardens, Kew.

    Sources

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