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This genus is accepted, and its native range is Tropics.
Hypolytrum

[FTEA]

Cyperaceae, K Hoenselaar, B. Verdcourt & H. Beentje. Hypolytrum, D Simpson. Fuirena, M Muasya. Flora of Tropical East Africa. 2010

Morphology General Habit
Robust, rhizomatous, perennial herbs.
Morphology Roots
Roots coarse; cataphylls subtending lateral culms only, the upper ones with at least part of the margins adnate at first and completely sheathing the culm, later splitting.
Morphology Culms
Culms usually scapose
Morphology Leaves
Leaves eligulate; basal leaf sheaths open adaxially, cauline leaf sheath tubular
Morphology Reproductive morphology Inflorescences Bracts
Involucral bracts leaf-like
Morphology Reproductive morphology Inflorescences
Inflorescence terminal, paniculate, the ultimate branches subtending small clusters of spikes. Spikes ellipsoid or narrowly cylindric, composed of tightly imbricate, spirally arranged bracts, each subtending a much reduced pseudanthium (spicoid).
Morphology Reproductive morphology Flowers
Spicoid composed of a naked terminal pistil and (2–3) floral bracts each subtending a single stamen, and a naked terminal pistil; floral bracts free, membranous, boat-shaped, strongly keeled.
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anthers oblong to linear, latrorsely dehiscent, without extended connective tip.
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Filaments filiform, exceeding spicoid bract.
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigma branches 2(–3).
Morphology Reproductive morphology Flowers Gynoecium Style
Style elongate, rarely persistent
Morphology Reproductive morphology Fruits
Nutlet compressedellipsoid to ellipsoid, apical portion spongy, triangular, base shortly stipitate or triangular stipitate; surface with or without longitudinal ridges.
Morphology Leaves Leaf veins
Lateral costae 0 or 2

Native to:

Andaman Is., Angola, Assam, Bangladesh, Belize, Benin, Bismarck Archipelago, Bolivia, Borneo, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Cabinda, Cambodia, Cameroon, Caroline Is., Central African Repu, Central American Pac, China South-Central, China Southeast, Colombia, Congo, Costa Rica, East Himalaya, Ecuador, Equatorial Guinea, Fiji, French Guiana, Gabon, Ghana, Guatemala, Guinea, Guinea-Bissau, Gulf of Guinea Is., Guyana, Hainan, Honduras, India, Ivory Coast, Jawa, Laos, Liberia, Madagascar, Malaya, Maluku, Mauritius, Mexico Gulf, Mexico Southeast, Myanmar, New Guinea, Nicaragua, Nicobar Is., Nigeria, Northern Territory, Panamá, Peru, Philippines, Queensland, Senegal, Sierra Leone, Solomon Is., Sri Lanka, Sulawesi, Sumatera, Suriname, Taiwan, Tanzania, Thailand, Trinidad-Tobago, Uganda, Venezuela, Vietnam, Zaïre

Hypolytrum Pers. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
s.coll. [Cat. no. 3402] K001119315
Wallich, N. [Cat. no. 3401], Singapore K001119313
Wallich, N. [Cat. no. 3403], Malaysia K001119316
Wallich, N. [Cat. no. 3405], India K001119325
Wallich, N. [Cat. no. 3405], Nepal K001119324
Wallich, N. [Cat. no. 3402], Malaysia K001119314

First published in Syn. Pl. 1: 70 (1805)

Accepted by

  • Govaerts, R. & Simpson, D.A. (2007). World Checklist of Cyperaceae. Sedges: 1-765. The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Govaerts, R. (2004). World Checklist of Monocotyledons Database in ACCESS: 1-54382. The Board of Trustees of the Royal Botanic Gardens, Kew.

Literature

Flora of West Tropical Africa

  • F.T.A. 8: 486 (1902)
  • Nelmes in Kew Bull. 10: 63–82 (1955).
  • in Pers. Syn. 1: 70 (1805)

Flora of Tropical East Africa

  • K.B. 1955: 63–82 (1955)
  • Pers., Syn. 1: 70 (1805)

Flora of Tropical East Africa
Flora of Tropical East Africa
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Flora of West Tropical Africa
Flora of West Tropical Africa

Herbarium Catalogue Specimens
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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
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