1. Family: Euphorbiaceae Juss.
    1. Genus: Tragia Plum. ex L.
      1. Tragia petiolaris Radcl.-Sm.

        This species is accepted, and its native range is Tanzania to Zambia.

    [FTEA]

    Euphorbiaceae, A. R.-Smith. Flora of Tropical East Africa. 1987

    Habit
    An annual or perennial, monoecious, unbranched or scarcely branched, sparingly pubescent weakly urticating herb, erect at first, later twining, up to 80 cm. when supported.
    Leaves
    Petioles of the lower leaves up to 11 cm. long, those of the other leaves progressively shorter upwards; blade ovate, ovate-lanceolate or lanceolate-oblong in outline, hastate or sometimes irregularly shortly 1–6-lobed, 2–10 cm. long, 0.7–5 cm. wide, acute, acutely or obtusely acuminate, truncate or shallowly widely cordate, irregularly dentate to subentire, membranaceous, 3–5-nerved from the base, lateral nerves 3–6 pairs, not prominent above and scarcely so beneath, sparingly setose above, evenly setose along the midrib and main nerves beneath, dark green.
    Stipules
    Stipules lanceolate, 2 mm. long, acute, sparingly pubescent.
    Inflorescences
    Inflorescences leaf-opposed, often borne on short lateral shoots, slender, 1–3 cm. long, the peduncles 0.5–1.5 cm. long, mostly ♂ with a single basal ♀ flower; axis sparingly pubescent; ♂ bracts linear or linear-lanceolate, 1.5 mm. long, acute, subglabrous, 1-flowered; bracteoles subulate, 0.5 mm. long; ♀ bracts lanceolate, and the bracteoles linear, otherwise as in ♂.
    Flowers
    Male flowers:pedicels 1 mm. long, pubescent, articulate in the middle; buds subglobose, depressed at the apex; calyx-lobes elliptic-ovate, 0.8 mm. long, cucullate, subglabrous, green; stamens minute, filaments very short, anthers 0.5 mm. across; pistillode triangular, flat. Female flowers:pedicels 0.5–1 mm. long, thicker than in ♂, puberulous; calyx-lobes 6, 1 mm. long, extending to 3 mm. long in fruit, ovate-lanceolate in outline, pinnately lobulate, with (2–)3(–4) lobules on each side, the terminal lobe somewhat larger than the lateral ones but otherwise similar to them, rhachis puberulous without, pubescent at first within, later glabrescent, the rhachis straw-coloured, the lobules green; ovary trilobate, 1 mm. diameter, densely setose; styles 3, 1.5 mm. long, united for half their length, glabrous or subglabrous, the stigmas recurved, smooth.
    Male
    Male flowers:pedicels 1 mm. long, pubescent, articulate in the middle; buds subglobose, depressed at the apex; calyx-lobes elliptic-ovate, 0.8 mm. long, cucullate, subglabrous, green; stamens minute, filaments very short, anthers 0.5 mm. across; pistillode triangular, flat.
    Female
    Female flowers:pedicels 0.5–1 mm. long, thicker than in ♂, puberulous; calyx-lobes 6, 1 mm. long, extending to 3 mm. long in fruit, ovate-lanceolate in outline, pinnately lobulate, with (2–)3(–4) lobules on each side, the terminal lobe somewhat larger than the lateral ones but otherwise similar to them, rhachis puberulous without, pubescent at first within, later glabrescent, the rhachis straw-coloured, the lobules green; ovary trilobate, 1 mm. diameter, densely setose; styles 3, 1.5 mm. long, united for half their length, glabrous or subglabrous, the stigmas recurved, smooth.
    Fruits
    Fruits trilobate, 3.5 mm. long, 5.5 mm. diameter, smooth, evenly puberulous, sparingly pubescent and setose, green.
    Seeds
    Seeds 2.5 mm. diameter, reddish brown, marbled pale grey and whitish, the grey blotches sparingly and the whitish blotches densely papillose.
    Figures
    Fig. 58.
    Habitat
    In shady deciduous thicket; 900–1500 m.
    Distribution
    T4 T5
    [FZ]

    Euphorbiaceae, A. Radcliffe-Smith. Flora Zambesiaca 9:4. 1996

    Habit
    A climbing urticating perennial herb, monoecious; stems pubescent and puberulous.
    Stipules
    Stipules 2 mm long, linear-lanceolate, acute.
    Petiole
    Petiole 0.5–11 cm long, slender.
    Leaf lamina
    Leaf blade 2–10 × 0.7–5 cm, ovate to ovate-lanceolate, sometimes indistinctly lobed, acutely acuminate at the apex, irregularly dentate to shallowly sinuate on the margins or subentire, cuneate to rounded or truncate to shallowly wide-cordate at the base, membranaceous, 3–5-nerved from the base, sparingly hirsute-pubescent on the upper surface, evenly pubescent and shortly setose especially along the midrib and main nerves beneath; lateral nerves in 3–6 pairs, not or scarcely prominent above or beneath.
    Inflorescences
    Inflorescences 1–3 cm long, with the peduncle up to 1.5 cm long, leaf-opposed on short lateral shoots, delicate, bisexual, with a single female flower at the base; male bracts 1.5 mm long, linear, ciliate; male bracteoles 0.5 mm long, subulate; female bracts lanceolate, and bracteoles linear, otherwise ± as in the male.
    Flowers
    Male flowers: pedicels 1 mm long, jointed; buds subglobose, apically depressed; calyx lobes 0.8 × 0.5 mm, elliptic-ovate, cucullate, subglabrous, green; stamens less than 0.5 mm long; pistillode triangular. Female flowers: pedicels 0.5 mm long, extending to 1.5 mm in fruit; calyx lobes 6, 1 × 0.5 mm, accrescent to 2–3 × 1 mm, each lobe (5)7–9-lobulate, the lobules oblong-linear, shorter than the width of the calyx-lobe rhachis, sparingly shortly setose, green; the calyx-lobe rhachis linear-lanceolate, sparingly pubescent without, glabrous within, becoming hardened and whitish within; ovary 1 mm in diameter, 3-lobed, densely setose; styles 3, 1 mm long, connate for two-thirds of their length, glabrous, stigmas ± smooth, recurved.
    Male
    Male flowers: pedicels 1 mm long, jointed; buds subglobose, apically depressed; calyx lobes 0.8 × 0.5 mm, elliptic-ovate, cucullate, subglabrous, green; stamens less than 0.5 mm long; pistillode triangular.
    Female
    Female flowers: pedicels 0.5 mm long, extending to 1.5 mm in fruit; calyx lobes 6, 1 × 0.5 mm, accrescent to 2–3 × 1 mm, each lobe (5)7–9-lobulate, the lobules oblong-linear, shorter than the width of the calyx-lobe rhachis, sparingly shortly setose, green; the calyx-lobe rhachis linear-lanceolate, sparingly pubescent without, glabrous within, becoming hardened and whitish within; ovary 1 mm in diameter, 3-lobed, densely setose; styles 3, 1 mm long, connate for two-thirds of their length, glabrous, stigmas ± smooth, recurved.
    Fruits
    Fruit 3.5 × 5.5 mm, 3-lobed, smooth, evenly minutely puberulous, sparingly setose.
    Seeds
    Seeds 2.5 mm in diameter, subglobose, greyish-buff, mottled reddish-brown, with scattered whitish papillose patches.

    Images

    Distribution

    Native to:

    Tanzania, Zambia

    Tragia petiolaris Radcl.-Sm. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Richards, H.M. [22979], Tanzania K000425705 Unknown type material

    First published in Kew Bull. 37: 687 (1983)

    Accepted by

    • Govaerts, R., Frodin, D.G. & Radcliffe-Smith, A. (2000). World Checklist and Bibliography of Euphorbiaceae (and Pandaceae) 1-4: 1-1622. The Board of Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Flora of Tropical East Africa
    • A. R.-Sm. in Kew Bulletin 37: 687 (1983).

    Sources

    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 Selected Plant Families 2019. 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 2019. 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