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This variety is accepted, and its native range is Central U.S.A. to N. Central Argentina.
Euphorbia cyathophora

[CPLC]

Bernal, R., Gradstein, S.R. & Celis, M. (eds.). 2015. Catálogo de plantas y líquenes de Colombia. Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá. http://catalogoplantasdecolombia.unal.edu.co

Distribution
Nativa en Colombia; Alt. 300 - 2600 m.; Andes, Islas Caribeñas, Pacífico, Valle del Cauca, Valle del Magdalena.
Morphology General Habit
Hierba
Conservation
Preocupación Menor

[FZ]

Euphorbiaceae, S. Carter & L.C. Leach. Flora Zambesiaca 9:5. 2001

Morphology General Habit
Shrubby annual herb, erect to 1 m high, with hollow glabrous stems and branches.
Morphology Leaves
Leaves with a petiole to 1.5 cm long, pilose; stipules modified as brownish glands; lamina to 10 × 5 cm, markedly panduriform, obtuse at the apex, cuneate at the base, shallowly and irregularly toothed at the margin, glabrous on upper surface, sparsely pilose with septate hairs on lower surface, glabrescent.
Morphology Reproductive morphology Inflorescences
Cymes terminal, each forking c. 4 times, with rays progressively shorter from 5 cm to 2 mm long and cyathia densely clustered.
Morphology Reproductive morphology Inflorescences Bracts
Basal bracts similar to the leaves but with a bright orange-red blotch at the base, the upper bracts progressively smaller, more lanceolate, subsessile and entirely red.
Morphology Reproductive morphology Inflorescences Cyathia
Cyathia c. 3.5 × 3 mm with barrel-shaped involucres, glabrous; gland peltate, 1.5 mm long, funnel-shaped, the opening transversely elliptic, 2 mm wide; lobes 1.5 × 1.5 mm, rounded, margin deeply and bluntly toothed.
sex Male
Male flowers: bracteoles ligulate, feathery; stamens 4 mm long.
Morphology Reproductive morphology Flowers
Female flower: ovary pedicellate, glabrous; styles 2 mm long, bifid almost to the base. Male flowers: bracteoles ligulate, feathery; stamens 4 mm long.
sex Female
Female flower: ovary pedicellate, glabrous; styles 2 mm long, bifid almost to the base.
Morphology Reproductive morphology Fruits
Capsule exserted on a reflexed pedicel to 5.5 mm long, 4 × 5 mm, deeply 3-lobed.
Morphology Reproductive morphology Seeds
Seeds 2.8 × 2.2 mm, ovoid-conical with acute apex and warts sharply pointed, blackish-brown.

[FTEA]

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

Morphology General Habit
Erect shrubby annual herb to 1 m. high, with glabrous stems and branches.
Morphology Leaves
Leaves ovate to markedly panduriform, to 10 × 5 cm., base cuneate, apex obtuse, margin shallowly toothed, upper surface glabrous, lower surface pilose with curved septate hairs, glabrescent; petiole to 1.5 cm. long, pilose; glandular stipules brownish.
Morphology Reproductive morphology Inflorescences Cyathia
Cyathia densely clustered in terminal cymes, forking ± 4 times, with progressively shorter rays from ± 5 cm. to 2 mm. long; basal bracts similar to the leaves with a bright red blotch at the base, the upper ones progressively smaller, more lanceolate, sub-sessile and entirely red. Cyathia glabrous, ± 3.5 × 3 mm., with barrel-shaped involucres; gland peltate, funnel-shaped, 1.5 mm. long, the opening transversely elliptical, 2 mm. wide; involucral lobes rounded, 1.5 × 1.5 mm., margin deeply lobed.
sex Male
Male flowers:bracteoles ligulate, apices feathery; stamens 4 mm. long.
Morphology Reproductive morphology Flowers
Female flower:ovary pedicellate, glabrous; styles 2 mm. long, bifid almost to the base. Male flowers:bracteoles ligulate, apices feathery; stamens 4 mm. long.
sex Female
Female flower:ovary pedicellate, glabrous; styles 2 mm. long, bifid almost to the base.
Morphology Reproductive morphology Fruits
Capsule exserted on a reflexed pedicel to 5.5 mm. long, deeply 3-lobed, 4 × 5 mm.
Morphology Reproductive morphology Seeds
Seeds ovoid-conical, with acute apex, 2.8 × 2.2 mm., blackish brown, surface sharply tuberculate.
Habitat
A garden escape around habitation and on waste ground; 0–1800 m.
Distribution
K4 K7 T1 T3 T4 T6 Z pantropical, introduced into a number of places throughout tropical Africa as an ornamental plant and becoming naturalised

Native to:

Argentina Northeast, Argentina Northwest, Arkansas, Bahamas, Belize, Bolivia, Cayman Is., Chile North, Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador, Florida, French Guiana, Georgia, Haiti, Honduras, Illinois, Indiana, Iowa, Jamaica, Kansas, Leeward Is., Louisiana, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Minnesota, Mississippi, Missouri, Nebraska, New Mexico, Nicaragua, Oklahoma, Panamá, Peru, Puerto Rico, South Dakota, Tennessee, Texas, Trinidad-Tobago, Turks-Caicos Is., Utah, Venezuela, Virginia, Windward Is., Wisconsin

Introduced into:

Alabama, Assam, Bermuda, Botswana, Brazil Northeast, Brazil South, California, Cambodia, Caroline Is., Chagos Archipelago, China North-Central, China South-Central, China Southeast, Christmas I., Cocos (Keeling) Is., Cook Is., East Himalaya, Fiji, Galápagos, Gilbert Is., Hainan, Hawaii, India, Kentucky, Line Is., Marianas, Marshall Is., Maryland, Mozambique, Nauru, New Caledonia, Niue, Norfolk Is., North Carolina, Ohio, Palestine, Phoenix Is., Samoa, Seychelles, Society Is., South Carolina, South China Sea, St.Helena, Taiwan, Thailand, Togo, Tokelau-Manihiki, Tonga, Tuamotu, Wake I., West Himalaya, Zambia, Zimbabwe

Euphorbia heterophylla var. cyathophora (Murray) Griseb. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Jan 1, 2008 Pringle, C.G. [11168], Hidalgo Euphorbia cyathophora K000476677
Euphorbia cyathophora 4104.000
Harley, R.M. [18057], Brazil Euphorbia cyathophora K001210917
Harley, R.M. [17269], Brazil Euphorbia cyathophora K001210916

First published in Fl. Brit. W. I.: 45 (1859)

Accepted by

  • Christenhusz, M.J.M. (2002). Notes on Euphorbia and Pedilanthus (Euphorbiaceae) in the Guianas Harvard Papers in Botany 7: 1-6.
  • Jones, R.L. (2005). Plant life of Kentucky. An illustrated guide to the vascular flora: 1-833. The universitry press of Kentucky.
  • Mohlenbrock, R.H. (2014). Vascular Flora of Illinois. A Field Guide, ed. 4: 1-536. Southern Illinois University Press, Carbondale.
  • Wester, L. (1985). Checklist of the vascular plants of the Northern Line Islands Atoll Research Bulletin 287: 1-38.

Not 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. [Cited as Euphorbia cyathophora.]
  • Jørgensen, P.M., Nee, M.H. & Beck., S.G. (eds.) (2013). Catálogo de las plantas vasculares de Bolivia Monographs in Systematic Botany from the Missouri Botanical Garden 127: 1-1741. Missouri Botanical Garden. [Cited as Euphorbia cyathophora.]

Literature

Kew Backbone Distributions

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Catálogo de Plantas y Líquenes de Colombia
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Flora Zambesiaca
Flora Zambesiaca
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Flora of Tropical East Africa
Flora of Tropical East 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/