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This genus is accepted, and its native range is Tropical to China.
Cyathula sp.

[FSOM]

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

Morphology General Habit
Annual or perennial herbs with entire, opposite leaves
Morphology Reproductive morphology Inflorescences
Inflorescences terminal on the stem and branches, spike-like or capitate, bracteate, the ultimate division basically a triad of fertile flowers, the outer pair bracteolate and subtended on each side by 2 modified bracteolate flowers consisting of a number of uncinately hooked or straight (very rarely glochidiate – not in Somalia) spines or bracteoliform processes, but one or both of this outer pair sometimes absent; modified flowers at first very small, rapidly accrescent in fruit; bracteoles sometimes also uncinately hooked
Morphology Reproductive morphology Flowers Tepal
Tepals 5, shortly mucronate or sometimes (mostly the outer 2) also uncinately hooked, serving with the bracteoles and modified flowers to distribute the fruit
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 5, shortly monadelphous below, alternating with distinct, commonly dentate or lacerate pseudostaminodes
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary 1-ovulate
Morphology Reproductive morphology Flowers Gynoecium Style
Style slender, stigma capitate
Morphology Reproductive morphology Fruits
Fruit a thin-walled irregularly rupturing capsule falling with the perianth and bracteoles.
Distribution
Over 25 species in the tropics of both Old and New Worlds.
Note
C. orthacantha (Aschers.) Schinz was listed as a Somali plant by Kuchar, Pl. Somalia: 86 (1988). It might occur in Somalia, but no specimen has been seen.

[FZ]

Amaranthaceae, C. C. Townsend. Flora Zambesiaca 9:1. 1988

Morphology General Habit
Annual or perennial herbs with entire, opposite leaves.
Morphology Reproductive morphology Inflorescences
Inflorescence terminal on the stem and branches, spiciform or capitate, bracteate, the ultimate division basically a triad of fertile flowers, the outer pair bracteolate and subtended laterally by 2 modified bracteolate flowers consisting of a number of sharply uncinately hooked (more rarely straight or glochidiate) spines or bracteoliform processes, but one or both of the outer pair sometimes absent, bracteoles also sometimes with a hooked arista; spines of the modified flowers at first small, rapidly accrescent, few to many, clustered with the clusters not or very shortly stalked.
Morphology Reproductive morphology Inflorescences Bracteoles
Bracts persistent, finally more or less deflexed; bracteoles and perianth falling with the fruit.
Morphology Reproductive morphology Flowers Perianth
Perianth segments 5, very shortly mucronate or some (especially the outer 2) hooked-aristate, serving with the bracteoles and modified flowers to distribute the fruit.
Morphology Reproductive morphology Flowers Androecium
Stamens 5, the filaments delicate, shortly monadelphous at the base, alternating with distinct, commonly toothed or lacerate pseudostaminodes; anthers bilocular.
Morphology Reproductive morphology Flowers Gynoecium Style
Style slender, stigma capitate.
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary with a single pendulous ovule.
Morphology Reproductive morphology Fruits
Fruit a thin-walled utricle, irregularly ruptured by the developing seed.
Morphology Reproductive morphology Seeds
Seed ovoid, slightly compressed; endosperm copious.

[FTEA]

Amaranthaceae, C.C. Townsend. Flora of Tropical East Africa. 1985

Morphology General Habit
Annual or perennial herbs with entire opposite leaves
Morphology Reproductive morphology Inflorescences
Inflorescence terminal on the stem and branches, spiciform or capitate, bracteate, the ultimate division basically a triad of fertile flowers, the outer pair bracteolate and subtended on the outer surface by 2 modified bracteolate flowers consisting of a number of sharply uncinately hooked (rarely glochidiate or sometimes straight) spines or bracteoliform processes, but one or both of the outer pair sometimes absent, bracteoles sometimes also with a strongly hooked arista, the spines of the modified flowers at first small, rapidly accrescent, few to many, clustered, with the clusters not or very shortly stalked
Morphology Reproductive morphology Inflorescences Bracts
Bracts persistent, finally ± deflexed; bracteoles and perianth falling with the fruit
Morphology Reproductive morphology Flowers Perianth
Perianth-segments 5, very shortly mucronate or some (especially the outer 2) hooked-aristate, serving with the bracteoles and modified flowers to distribute the fruit
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 5, the filaments delicate, shortly monadelphous at the base, alternating with distinct, commonly toothed or lacerate pseudostaminodes; anthers bilocular
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary with a single pendulous ovule; style slender; stigma capitate
Morphology Reproductive morphology Fruits
Fruit a thin-walled capsule, irregularly ruptured by the developing seed
Morphology Reproductive morphology Seeds
Seed ovoid, slightly compressed; endosperm copious.

Native to:

Angola, Assam, Bangladesh, Belize, Benin, Bolivia, Borneo, Botswana, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Burkina, Burundi, Cambodia, Cameroon, Cape Provinces, Central African Repu, Chad, China North-Central, China South-Central, China Southeast, Colombia, Congo, Costa Rica, Cuba, Dominican Republic, East Himalaya, Ecuador, El Salvador, Eritrea, Ethiopia, Fiji, Free State, Gabon, Gambia, Ghana, Guatemala, Guinea, Guinea-Bissau, Gulf of Guinea Is., Hainan, Haiti, Honduras, India, Ivory Coast, Jamaica, Jawa, Kenya, KwaZulu-Natal, Laos, Lesotho, Lesser Sunda Is., Liberia, Madagascar, Malawi, Malaya, Mali, Maluku, Mexico Central, Mexico Gulf, Mexico Southeast, Mexico Southwest, Mozambique, Myanmar, Namibia, Nepal, New Guinea, Nicaragua, Nicobar Is., Nigeria, Northern Provinces, Panamá, Peru, Philippines, Queensland, Rwanda, Samoa, Senegal, Sierra Leone, Solomon Is., Somalia, Sri Lanka, Sudan, Sulawesi, Sumatera, Swaziland, Taiwan, Tanzania, Thailand, Tibet, Togo, Tonga, Trinidad-Tobago, Uganda, Vanuatu, Venezuela, Vietnam, West Himalaya, Zambia, Zaïre, Zimbabwe

Introduced into:

Cook Is., French Guiana, Guyana, Leeward Is., Marquesas, Mauritius, Puerto Rico, Réunion, Seychelles, Society Is., Suriname, Tubuai Is., Venezuelan Antilles, Windward Is.

Cyathula Blume appears in other Kew resources:

First published in Bijdr. Fl. Ned. Ind.: 548 (1826)

Accepted by

  • Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.

Literature

Flora of West Tropical Africa

  • —F.T.A. 6, 1: 42.

Flora Zambesiaca

  • Bijdr. Fl. Nederl. Ind.: 548 (1825) nomen cons. (non Cyathula Lour., Fl. Cochinch.: 93, 101 (1790)).

Flora of Somalia

  • Flora Somalia, Vol 1, (1993) Author: by C. C. Townsend [updated by M. Thulin 2008]
  • Townsend in Publ. Cairo Univ. Herb. 7 & 8: 74–78 (1977).

Flora of Tropical East Africa

  • Bijdr. Fl. Nederl. Ind.: 548 (1826)
  • C.C. Townsend in Publ. Cairo Univ. Herb. 7–8: 74–78 (1977), nom. conserv.

Flora Zambesiaca
Flora Zambesiaca
http://creativecommons.org/licenses/by-nc-sa/3.0

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

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

Neotropikey
Milliken, W., Klitgard, B. and Baracat, A. (2009 onwards), Neotropikey - Interactive key and information resources for flowering plants of the Neotropics.
http://creativecommons.org/licenses/by/3.0

Plants and People Africa
Common Names from Plants and People Africa http://www.plantsandpeopleafrica.com/
© Plants and People Africa http://www.plantsandpeopleafrica.com http://creativecommons.org/licenses/by/3.0/