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This species is accepted, and its native range is Tropical & S. Africa, Madagascar, Arabian Peninsula, India to Peninsula Malaysia.

[FTEA]

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

Morphology General Habit
An annual herb up to 60 cm., although more commonly ± 30 cm. tall.
Morphology General Shoots
Young shoots and petioles crisped-puberulous or -pubescent.
Morphology Leaves
Petioles 0.5–3.5 cm. long, with 2 minute subulate stipels at the apex; leaf-blade ovate, elliptic-ovate, ovate-rhombic or ovate-lanceolate, 2–7.5 cm. long, 0.7–4 cm. wide, obtusely or subacutely shortly acuminate at the apex, cuneate or rounded at the base, crenate, membranaceous, lateral nerves 4–7 pairs, the lowest 2 or 3 pairs often crowded, the upper remote, ascending and inwardly arching, sparingly pubescent above and beneath at first, soon glabrescent above and subglabrous beneath, smooth, dull grey-green, sometimes purplish tinged.
Morphology Leaves Stipules
Stipules triangular, 0.5 mm. long, translucent.
Morphology Reproductive morphology Inflorescences
Infloresences bisexual or rarely unisexual, 3–8(–12.5) cm. long; axis slender, sparingly pubescent to subglabrous; bracts lanceolate, 1 mm. long, green with hyaline margins.
sex Male
Male flowers:pedicels capillary, articulate, 2 mm. long, glabrous, white; calyx-lobes 3, elliptic-obovate to suborbicular, 0.75 mm. long, rounded, subglabrous without, glabrous within, yellowish green; stamens (3–)6–10(–20), 1-multi-seriate, filaments 0.5 mm. long, purple, anthers minute, yellow; disc-glands stipitate, spathulate, pubescent, purple.
Morphology Reproductive morphology Flowers
Female flowers:pedicels not as slender as ♂, articulate, 2 mm. long, subglabrous; calyx-lobes 3–5, lanceolate, 2 mm. long, sharply acute, sparingly pubescent without, glabrous within, green with a narrow hyaline margin; disc-glands linear-filiform, 1 mm. long; ovary (2–)3(–4)-lobate, 1 mm. diameter, minutely papillose, strigose, purple; styles 1 mm. long, glabrous, ochreous-tawny. Male flowers:pedicels capillary, articulate, 2 mm. long, glabrous, white; calyx-lobes 3, elliptic-obovate to suborbicular, 0.75 mm. long, rounded, subglabrous without, glabrous within, yellowish green; stamens (3–)6–10(–20), 1-multi-seriate, filaments 0.5 mm. long, purple, anthers minute, yellow; disc-glands stipitate, spathulate, pubescent, purple.
sex Female
Female flowers:pedicels not as slender as ♂, articulate, 2 mm. long, subglabrous; calyx-lobes 3–5, lanceolate, 2 mm. long, sharply acute, sparingly pubescent without, glabrous within, green with a narrow hyaline margin; disc-glands linear-filiform, 1 mm. long; ovary (2–)3(–4)-lobate, 1 mm. diameter, minutely papillose, strigose, purple; styles 1 mm. long, glabrous, ochreous-tawny.
Morphology Reproductive morphology Fruits
Fruit roundly (2–)3(–4)-lobate, 2.5 mm. long, 4 mm. diameter, strigose, often purplish.
Morphology Reproductive morphology Seeds
Seeds angular-subglobose, truncate-apiculate at the chalazal end, 2 mm. long, 1.5 mm. wide, muricate, pinkish brown.
Figures
Fig. 52.
Habitat
Open places in woodland and bushland, along rivers and shores, commonly ruderal and a weed in places; 0–1650 m.
Distribution
K2 K5 K7 P T1 T3 T4 T6 T7 T8 U1 U2 U3 U4 from Guinea Bissau eastwards to Ethiopia and south to Angola, Botswana and Zimbabwealso in Madagascar, India, Ceylon, Malaya, Singapore and N. Australia

[FSOM]

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

Morphology General Habit
Erect annual, 10–40(–60) cm high; shoots and petioles crisped-pubescent
Morphology Leaves
Petiole 0.5–3.5 cm long; leaf-blade ± ovate, 1.8–6.5 x 1.2–3.5 cm, base rounded or cuneate, usually minutely stipellate, tip bluntly acuminate, crenate, glabrescent; stipules 0.5 mm long
Morphology Reproductive morphology Inflorescences
Racemes 3–8(–12.5) cm long, bracts minute, usually subtending 1 female plus several male flowers
Morphology Reproductive morphology Flowers
Female flowers: pedicels stouter than male; calyx-lobes 3–5, 2 mm long, acute, hairy; disc-glands linear, 1 mm long; ovary strigose; styles laciniate, brown Male flowers: pedicels c. 2 mm long, jointed; calyx-lobes 3, 0.75 mm long, rounded; interstaminal glands clavate, purple; stamens (3–)6–10(–20), filaments purple
Morphology Reproductive morphology Fruits
Capsule deeply (2–)3(–4)-lobed, lobes c. 2.5 mm diam.
Morphology Reproductive morphology Seeds
Seeds 1.5–2 mm diam., pitted-muricate, brown or black, at first enclosed in pale, fragile skin.
Distribution
S1, 2 west to Guinea Bissau, south to Angola, Botswana and Zimbabwe; Madagascar, India, Sri Lanka, Malaysia, N Australia
Ecology
Altitude range 300–450 m.

[FZ]

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

Morphology General Habit
An erect or procumbent annual herb up to 50 cm tall, rarely taller.
Morphology Stem
Stems crisped-pubescent in rows.
Morphology Leaves Petiole
Petioles 0.5–2.5 cm long.
Morphology Leaves Leaf lamina
Leaf blades 2–7 × 1–3.5 cm, elliptic-ovate, subacute or obtuse apically, crenate, ± rounded at the base, membranaceous, sparingly pubescent to subglabrous, punctate, dull, pale green, sometimes purplish-tinged; lateral nerves in 4–7 pairs, ascending, camptodromous.
Morphology Leaves Stipules
Stipules 0.5 mm long, glandular.
Morphology Leaves Stipel
Stipels minute, glandular.
Morphology Reproductive morphology Inflorescences
Inflorescences 1–7.5 cm long, usually bisexual; bracts c. 1 mm long, ovate-lanceolate, green with hyaline margins.
sex Male
Male flowers: pedicels 2 mm long, capillary, glabrous; calyx lobes 0.75 mm long, obovate-suborbicular, ± glabrous, pale yellowish-green or whitish; disk glands spathulate, pubescent, purple; stamens 3–20, 1–multiseriate, filaments 0.5 mm long, purple, anthers minute, yellow.
Morphology Reproductive morphology Flowers
Female flowers: pedicels 1–5 mm long, extending to 3 cm in fruit, pubescent; sepals 1–2 mm long, ovate-lanceolate, acute, sparingly pubescent, green with a narrow hyaline margin; disk glands 1 mm long, linear-filiform; ovary 1 mm in diameter, 2-lobed to 4-lobed, minutely papillose, strigose, purple; styles 1 mm long, glabrous, ochreous-tawny. Male flowers: pedicels 2 mm long, capillary, glabrous; calyx lobes 0.75 mm long, obovate-suborbicular, ± glabrous, pale yellowish-green or whitish; disk glands spathulate, pubescent, purple; stamens 3–20, 1–multiseriate, filaments 0.5 mm long, purple, anthers minute, yellow.
sex Female
Female flowers: pedicels 1–5 mm long, extending to 3 cm in fruit, pubescent; sepals 1–2 mm long, ovate-lanceolate, acute, sparingly pubescent, green with a narrow hyaline margin; disk glands 1 mm long, linear-filiform; ovary 1 mm in diameter, 2-lobed to 4-lobed, minutely papillose, strigose, purple; styles 1 mm long, glabrous, ochreous-tawny.
Morphology Reproductive morphology Fruits
Fruit 2–3 × 3.5–5.5 mm, roundly 3-lobed, rarely 2- or 4-lobed, sparingly strigose to subglabrous, dark green or bluish-green becoming dull purple on drying; columella 1.5 mm long.
Morphology Reproductive morphology Seeds
Seeds 2 × 1.5 mm, ovoid-subglobose, reticulate, reddish-brown, greyish or blackish, paler in the pits.

[FWTA]

Euphorbiaceae, Hutchinson and Dalziel. Flora of West Tropical Africa 1:2. 1958

Morphology General Habit
A weed of cultivation, 1/2–2 ft. high, stems simple or branched, pubescent, woody below.

Native to:

Angola, Bangladesh, Benin, Botswana, Burkina, Cameroon, Central African Repu, Chad, Congo, Equatorial Guinea, Ethiopia, Gabon, Ghana, Guinea, Guinea-Bissau, India, Ivory Coast, Kenya, Laccadive Is., Liberia, Madagascar, Malawi, Malaya, Maldives, Mauritania, Mozambique, Myanmar, Nigeria, Saudi Arabia, Senegal, Sierra Leone, Sri Lanka, Sudan, Tanzania, Thailand, Togo, Uganda, West Himalaya, Yemen, Zambia, Zaïre, Zimbabwe

Introduced into:

Hainan, South China Sea

Micrococca mercurialis (L.) Benth. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
May 1, 2002 Etuge, M. [1828], Cameroon K000026664
Schlechter, F.R.R. [12394], Cameroon K000181125
Thwaites, G.H.K. [3310], Sri Lanka K001094081
Ejiofor, M.C. [29375], Cameroon K000181124

First published in W.J.Hooker, Niger Fl.: 503 (1849)

Accepted by

  • Akoègninou, A., van der Burg, W.J. & van der Maesen, L.J.G. (eds.) (2006). Flore Analytique du Bénin: 1-1034. Backhuys Publishers.
  • Barberá, P., Velayos, M. & Aedo, C. (2013). Annotated checklist and identification keys of the Acalyphoideae (Euphorbiaceae) of Equatorial Guinea (Annobón, Bioko and Río Muni) Phytotaxa 140: 1-25.
  • Boulvert, Y. (1977). Catalogue de la Flore de Centrafrique 2(1): 1-85. ORSTOM, Bangui.
  • Brunel, J.F., Hiepo, P. & Scholz, H. (eds.) (1984). Flore Analytique du Togo Phanérogames: 1-751. GTZ, Eschborn.
  • Calane da Silva, M., Izdine, S. & Amuse, A.B. (2004). A Preliminary Checklist of the Vascular Plants of Mozambique: 1-184. SABONET, Pretoria.
  • Catarino, L., Sampaio Martins, E., Pinto-Basto, M.F. & Diniz, M.A. (2006). Plantas Vasculares e Briófitos da Guiné-Bissau: 1-298. Instituto de investigação científica tropical, Instituto Português de apoio ao desenvolvimento.
  • 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.
  • 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.
  • Lebrun, J.-P. (1998). Catalogue des plantes de la Mauritanie et du Sahara Occidental Boissiera 55: 1-322.
  • Lejoy, J., Ndjele, M.-B. & Geerinck, D. (2010). Catalogue-flore des plantes vasculaires des districts de Kisangani et de la Tshopo (RD Congo) Taxonomania. Revue de Taxonomie et de Nomenclature Botaniques 30: 1-307.
  • Mostaph, M.K. & Uddin, S.B. (2013). Dictionary of plant names of Bangladesh, Vasc. Pl.: 1-434. Janokalyan Prokashani, Chittagong, Bangladesh.
  • Sosef, M.S.M. & al. (2006). Check-list des plantes vasculaires du Gabon Scripta Botanica Belgica 35: 1-438.
  • van Welzen, P.C. & Chayamarit, K. (2007). Flora of Thailand 8(2): 305-592. The Forest Herbarium, National Park, Wildlife and Plant Conservation Department, Bangkok.

Not accepted by

  • Balakrishnan, N.P. & Chakrabarty, T. (2007). The family Euphorbiaceae in India. A synopsis of its profile, taxonomy and bibliography: 1-500. Bishen Singh Mahendra Pal Singh, Dehra Dun. [Cited as Claoxylon mercurialis.]

Literature

Flora of West Tropical Africa

  • Chev. Bot. 576.
  • Pax & K. Hoffm.Pax & K. Hoffm. in Engl. Pflanzenr. Euph. 7: 133, fig. 18, D–F
  • —F.T.A. 6, 1: 878

Kew Backbone Distributions

  • Akoègninou, A., van der Burg, W.J. & van der Maesen, L.J.G. (eds.) (2006). Flore Analytique du Bénin: 1-1034. Backhuys Publishers.
  • Boulvert, Y. (1977). Catalogue de la Flore de Centrafrique 2(1): 1-85. ORSTOM, Bangui.
  • Catarino, L., Sampaio Martins, E., Pinto-Basto, M.F. & Diniz, M.A. (2006). Plantas Vasculares e Briófitos da Guiné-Bissau: 1-298. Instituto de investigação científica tropical, Instituto Português de apoio ao desenvolvimento.
  • Fosberg, F.R. (1957). The Maldive islands, Indian Ocean Atoll Research Bulletin 58: 1-37.
  • Lebrun, J.-P. (1998). Catalogue des plantes de la Mauritanie et du Sahara Occidental Boissiera 55: 1-322.
  • Lebrun, J.-P., Audru, J., Gaston, A. & Mosnier, M. (1972). Catalogue des Plantes Vasculaires du Tchad Méridional: 1-289. Institut d' Elevage et de Médecine Vétérinaire des Pays Tropicaux, Maisons Alfort.
  • Lebrun, J.P., Toutain, B., Gaston, A. & Boudet, G. (1991). Catalogue des Plantes Vasculaires du Burkina Faso: 1-341. Institut d' Elevage et de Médecine Vétérinaire des Pays Tropicaux, Maisons Alfort.
  • Mostaph, M.K. & Uddin, S.B. (2013). Dictionary of plant names of Bangladesh, Vasc. Pl.: 1-434. Janokalyan Prokashani, Chittagong, Bangladesh.

Flora of Somalia

  • Flora Somalia, Vol 1, (1993) Author: by M. G. Gilbert [updated by M. Thulin 2008]

Flora of Tropical East Africa

  • A. Engler & O. Drude, Die Vegetation Der Erde, IX, Pflanzenwelt Afrikas 3(2): 76, t. 31 (1921).
  • A.D.Q. Agnew, Upland Kenya Wild Flowers p. 213 (1974).
  • Benth. in Hook., Niger Fl.: 503 (1849).
  • F. W. Andr., The Flowering Plants of the Anglo-Egyptian Sudan 2: 86 (1952).
  • F. White, Forest Flora of Northern Rhodesia p. 201 (1962).
  • Keay, Flora of West Tropical Africa, ed. 2, 1: 402 (1958).
  • Pax in A. Engler, Das Pflanzenreich IV. 147(7): 133, fig. 18A-C (1914).
  • Pax in Die Pflanzenwelt Ost-Afrikas und der Nachbargebiete, Theile C: 238 (1895).
  • Prain in Flora of Tropical Africa 6(1): 878 (1912).
  • Robyns, Flore des Spermatophytes du Parc National Albert 1: 458 (1948).

Flora Zambesiaca
Flora Zambesiaca
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Flora of Somalia
Flora of Somalia
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

Flora of West Tropical Africa
Flora of West Tropical Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Herbarium Catalogue Specimens
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 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

Kew Science Photographs
Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/