Code
CYPCP
Growth form
Sedge
Biological cycle
Annual
Habitat
Terrestrial
🗒 Synonyms
| synonym | Chlorocyperus compressus (L.) Palla |
| synonym | Cyperus brachiatus Poir. |
| synonym | Cyperus caffer G.Bertol. |
| synonym | Cyperus compressus f. depauperatus Domin |
| synonym | Cyperus compressus subsp. micranthus T.Koyama |
| synonym | Cyperus compressus var. brachiatus (Poir.) Nees |
| synonym | Cyperus compressus var. capillaceus C.B.Clarke |
| synonym | Cyperus compressus var. compositus J.Presl & C.Presl |
| synonym | Cyperus compressus var. floribundus E.G.Camus |
| synonym | Cyperus compressus var. laxus E.G.Camus |
| synonym | Cyperus compressus var. pectiniformis (Schult.) C.B.Clarke |
| synonym | Cyperus compressus var. simplex J.Presl & C.Presl |
| synonym | Cyperus conglomeratus Willd. |
| synonym | Cyperus dilutus f. decolorans Kük. |
| synonym | Cyperus giraudyi Steud. |
| synonym | Cyperus meyenii Nees & Arn. |
| synonym | Cyperus myyenii Nees & Arn. |
| synonym | Cyperus pectinatus Roxb., nom. illeg. |
| synonym | Cyperus pectiniformis Schult. |
🗒 Common Names
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| Chinese |
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| English |
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| Javanese |
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| Lao |
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| Other |
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| Sundanese |
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| Tagalog |
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📚 Overview
Description
Global description
Cyperus compresus is an annual sedge in clump. The culm is trigonal, the leaves are basal with a closed membranous sheath and a flat blade shorter than the culm. The inflorescence is terminal, compact or umbelliform, subtended by 2-5 bracts of unequal size. Spikelets in compact spikes directly at the tip of the culm or at the tip of 2 to 7 rays. Spikelets very flattened, green with brown central band. Achene trigonum, dark brown.
First leaves
The first leaf has a 3 to 6.5 mm long, 5-veined sheath with fine red longitudinal striations between the veins. The leaf blade is linear, 9 to 22 mm long and 0.6 to 0.75 mm wide, 5-veined.
General habit
Cyperus compressus forms small clumps of 5 to 40 cm in height, sometimes spreading.
Underground system
The roots are fasciculated and fibrous.
Culm
The culm is trigonal, smooth and glabrous, 10 to 40 cm high.
Leaves
The leaves are basal, few in number, simple, alternate in a tristiquous arrangement. The sheath is short, closed and membranous, streaked, becoming brownish. The blade is flat, 1 to 4 mm wide, hairless and smooth, light green. It does not exceed 3/4 of the height of the culm.
Inflorescence
The inflorescence is terminal and subtended by 2-5 spreading involucral bracts, similar to the leaves, of unequal size. The largest is longer than the largest rays of the inflorescence. The inflorescence consists of short, compact spikes of 2-10 spikelets on a rachis 2-5 mm long. The spikes are directly inserted at the top of the culm or at the end of 2 to 7 rays of unequal length (1 to 7 cm), forming an umbelliform inflorescence.
Spikelet
The spikelet is narrowly linear oval, 10 to 25 mm long and 2.5 to 3 mm wide, with 10 to 40 flowers whose distichous arrangement of the glumes gives the spikelet a very flattened appearance, and is green with a brown central base. The rachillet is not winged. The glumes are oval, 3 to 3.5 mm long, more or less coriaceous with an acute apex, with a strong green keel ending in a long mucro of 0.8 mm at its tip. The style is elongated (1 to 1.3 mm) and ends in a trifid stigma of 0.3 to 0.8 mm.
Fruit
The fruit is an obovoid trigonal achene, with 3 acute angles, slightly concave on 3 sides, black or dark brown, glossy, finely punctate, 1 to 1.25 mm long.
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
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No Data
📚 Nomenclature and Classification
No Data
📚 Natural History
Life Cycle
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China : Cyperus compressus flowers and fruit from July to December.
Nicaragua : It flowers and fruits all the year round.
Thailand: It flowers and fruits all the year round.
West Indies: Cyperus compressus flowers and fruits from September to December.
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
Reproduction
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One individual of Cyperus compressus can produce 1000 seeds. The weight of 1000 seeds is 0.53g and there are 2000 seeds per gram.
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
Ecology
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China: A species of grassland, seashore, along paths, lake shores, forests, rocky crevices, wet sandy riverbanks, open fields, rice field margins; from sea level to 900 (-1600) m altitude.
French Guiana: C. compressus is a common ruderal grass in sandy environments. It is a weed of rice fields and not very frequent in pastures.
Indonesia: C. compressus is a common weed of open grasslands, irrigated and rainfed rice. It is a ruderal species of disturbed areas, roadside and seashore, up to 1000 m altitude.
Mauritius: Cyperus compressus behaves mostly as a weed of crops, and a ruderal species on roadsides, in cleared areas, waste lands, especially at low altitude.
Philippines: C. compressus is a common weed in crops, especially in irrigated and rainfed rice, in grasslands and in gardens. It is a ruderal species in degraded areas, along roadsides, from low to high altitude.
Reunion: Cyperus compressus behaves most often as a weed of crops, and a ruderal species on roadsides, in cleared areas, wastelands, especially at low altitude.
Thailand: Cyperus compressus grows in open grasslands, wastelands, roadsides and as a weed of crops, from 0 to 850 m altitude.
West Indies: Cyperus compressus is a weedy and ruderal species that grows in crops, around paths and roads from 0 to 180 m altitude.
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
Diseases
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Cyperus compressus is an alternative host for nematodes such as Meloidogyne graminicola and rice pathogens such as Pyricularia oryzae.
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
No Data
📚 Habitat and Distribution
Description
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Origin
Cyperus compressus is a pantropical species found in tropical and subtropical America, Africa, the Indian Ocean islands, Asia and Australia.
Worldwide distribution
This species has been introduced to New Caledonia, Fiji, Polynesia, the Galapagos Islands and Hawaii.
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
No Data
📚 Occurrence
No Data
📚 Demography and Conservation
Risk Statement
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Local harmfulness
French Guiana: Cyperus compressus is uncommon in pastures, present in 3% of pastoral plots and is never an abundant weed.
Indonesia: Cyperus compressus is a common weed of rainfed and flooded rice.
Philippines: Common weed of rainfed and flooded rice.
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
No Data
📚 Uses and Management
Management
Local control
Indonesia: Chemical control of Cyperus compressus in rice cultivation with 0.9 kg MSMA + 0.45 kg 2,4-D in 182 l water per ha applied at 20 days after emergence.
Philippines: Mechanical control by hand weeding at 40 days after sowing. Chemical control in upland rice with propanil at 4.2 kg/ha applied 12 days after emergence, 2,4-D at 0.5-1.4 kg/ha applied at 20-22 days after emergence, MCPA at 0.4-1kg/ha applied between 20 and 30 days after emergence
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
There is content in another language. Please click here to read it. (Français)
No Data
📚 Information Listing
Global Biodiversity Information Facility (GBIF)
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Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
References
- Soerjani, M., Kostermans, A.J.G.H. & Tjitrosemito, G. 1987. Weeds of rice in Indonesia. Jakarta, Indonesia, Balai Puskata.
- Galinato, M.I., Moody, K. & Piggin, C.M. 1999. Upland rice weeds of south and south east Asia. Makati, Philippines, IRRI.
- Fournet, J. 2002. Flore illustrée des phanérogames de Guadeloupe et de Martinique. Montpellier, France, Cirad, Gondwana éditions.
- Plants of the World Online https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:304155-1
- World Flora Online http://www.worldfloraonline.org/taxon/wfo-0000369779
- Radanachaless, T. & Maxwell, J.F. 1994. Weeds of soybean fields in Thailand. Chiang Mai, Thailand, Multiple Cropping Center ed., Chiang Mai Univ.
- Simpson, D.A. & Koyama, T. 1998. Cyperaceae. Bangkok, Thailand, The forest herbarium, Royal forest department.
- Marais, W. & Araujo, A.C. 2018. Flore des Mascareignes. 202 Cyperacées. Marseille, France, IRD, MSIRI, RBG.
- Flora of China http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200026672
- Marnotte, P. & Carrara, A. 2007. "Plantes des rizières de Guyane." from http://plantes-rizieres-guyane.cirad.fr/. http://plantes-rizieres-guyane.cirad.fr/monocotyledones/cyperaceae/cyperus_compressus
Information Listing > References
- Soerjani, M., Kostermans, A.J.G.H. & Tjitrosemito, G. 1987. Weeds of rice in Indonesia. Jakarta, Indonesia, Balai Puskata.
- Galinato, M.I., Moody, K. & Piggin, C.M. 1999. Upland rice weeds of south and south east Asia. Makati, Philippines, IRRI.
- Fournet, J. 2002. Flore illustrée des phanérogames de Guadeloupe et de Martinique. Montpellier, France, Cirad, Gondwana éditions.
- Plants of the World Online https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:304155-1
- World Flora Online http://www.worldfloraonline.org/taxon/wfo-0000369779
- Radanachaless, T. & Maxwell, J.F. 1994. Weeds of soybean fields in Thailand. Chiang Mai, Thailand, Multiple Cropping Center ed., Chiang Mai Univ.
- Simpson, D.A. & Koyama, T. 1998. Cyperaceae. Bangkok, Thailand, The forest herbarium, Royal forest department.
- Marais, W. & Araujo, A.C. 2018. Flore des Mascareignes. 202 Cyperacées. Marseille, France, IRD, MSIRI, RBG.
- Flora of China http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200026672
- Marnotte, P. & Carrara, A. 2007. "Plantes des rizières de Guyane." from http://plantes-rizieres-guyane.cirad.fr/. http://plantes-rizieres-guyane.cirad.fr/monocotyledones/cyperaceae/cyperus_compressus
Images
Herbarium pictures ReColnat: https://explore.recolnat.org/search/botanique/simplequery=Cyperus%2520compressus
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
There is content in another language. Please click here to read it. (Français)
No Data
🐾 Taxonomy
| Root | Root |
| Kingdom | Plantae |
| Phylum | Tracheophyta |
| Class | Liliopsida |
| Order | Poales |
| Family | Cyperaceae |
| Genus | Cyperus |
| Species | Cyperus compressus L. |
📊 Temporal Distribution
📷 Related Observations
