Code
KYLTE
Growth form
sedge
Biological cycle
Annual
Habitat
Terrestrial
KYLTE
Growth form
sedge
Biological cycle
Annual
Habitat
Terrestrial
🗒 Synonyms
| synonym | Cyperus tenuifolius (Steud.) Dandy |
🗒 Common Names
| No Data |
📚 Overview
Description
Global description
Kyllinga tenuifolia is a tufted species with linear leaves with a flattened section and sheath becoming fibrous. The floriferous axes carry a group of 3 or 4 conical terminal white spikes and of small size. The spikelets are formed of 2 nested glumes of unequal sizes. The longer upper glume carries a short straight mucro. The fruit is a flat biconvex achene surmounted by a bifid style. The first leaves are linear to the limb long pointed. The limb section is almost flat. The margin is finely scabrous. At the base, the sheaths are short and fit together tristically.
General habit
The plant is tufted bunch from which grow many flowering axes. A tuft is up to 40 cm in height and 10 to 30 cm in diameter.
Underground system
The roots are fasciculate. They are simple, filiform and very numerous, of fibrous aspect.
Stem
The stem corresponds to the floriferous axis. It is solid of triangular section with rounded angles, 1 to 2 mm wide. The faces are glabrous and marked with 3 or 4 longitudinal streaks.
Leaf
The leaves are linear, arranged tristically. They are 10 to 15 cm long and 1 to 3 mm wide. The summit of the limb is gradually acuminate; the section is almost flat. The margin is finely scabrous. At the base of the lamina is a closed sheath of triangular section which becomes fibrous as it ages. Both sides are glabrous.
Inflorescence
The flowers are grouped in white conical spikes, grouped by 3 or 4 at the end of the axis. The median spike is more developed than the lateral spikes. It measures 5 to 7 mm long and 3 mm in diameter. The group of ears is subtended by 3 or 4 linear leafy bracts of unequal length (2 to 7 cm).
Spikelet
The spikelets are formed of 2 imbricated glumes overlapping each other, which gives them a flattened shape. The upper glume is 3 mm long and has a short, straight mucro at the top. The lower glume is shorter and does not have mucro. The keel is smooth. Each spikelet has 1 or 2 ovaries markedly shorter than the glumes and surmounted by a bifid style.
Fruit
The fruits are oblong, oblong, biconvex achenes, 2 mm long and 0.7 mm wide. They are surmounted by a bifid style. The tegument, light brown in color, is finely reticulated.
Kyllinga tenuifolia is a tufted species with linear leaves with a flattened section and sheath becoming fibrous. The floriferous axes carry a group of 3 or 4 conical terminal white spikes and of small size. The spikelets are formed of 2 nested glumes of unequal sizes. The longer upper glume carries a short straight mucro. The fruit is a flat biconvex achene surmounted by a bifid style. The first leaves are linear to the limb long pointed. The limb section is almost flat. The margin is finely scabrous. At the base, the sheaths are short and fit together tristically.
General habit
The plant is tufted bunch from which grow many flowering axes. A tuft is up to 40 cm in height and 10 to 30 cm in diameter.
Underground system
The roots are fasciculate. They are simple, filiform and very numerous, of fibrous aspect.
Stem
The stem corresponds to the floriferous axis. It is solid of triangular section with rounded angles, 1 to 2 mm wide. The faces are glabrous and marked with 3 or 4 longitudinal streaks.
Leaf
The leaves are linear, arranged tristically. They are 10 to 15 cm long and 1 to 3 mm wide. The summit of the limb is gradually acuminate; the section is almost flat. The margin is finely scabrous. At the base of the lamina is a closed sheath of triangular section which becomes fibrous as it ages. Both sides are glabrous.
Inflorescence
The flowers are grouped in white conical spikes, grouped by 3 or 4 at the end of the axis. The median spike is more developed than the lateral spikes. It measures 5 to 7 mm long and 3 mm in diameter. The group of ears is subtended by 3 or 4 linear leafy bracts of unequal length (2 to 7 cm).
Spikelet
The spikelets are formed of 2 imbricated glumes overlapping each other, which gives them a flattened shape. The upper glume is 3 mm long and has a short, straight mucro at the top. The lower glume is shorter and does not have mucro. The keel is smooth. Each spikelet has 1 or 2 ovaries markedly shorter than the glumes and surmounted by a bifid style.
Fruit
The fruits are oblong, oblong, biconvex achenes, 2 mm long and 0.7 mm wide. They are surmounted by a bifid style. The tegument, light brown in color, is finely reticulated.
Thomas Le Bourgeois
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
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No Data
📚 Nomenclature and Classification
No Data
📚 Natural History
Life Cycle
Kyllinga tenuifolia is an annual species, sometimes vivacious when moisture conditions permit. It reproduces mainly by seeds.
Thomas Le Bourgeois
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
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Look Alikes
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The different species of Cyperaceae are difficult to identify at the juvenile stages: the Kyllinga differ from other cyperaceae by the pleasant smell of fresh grass (coumarin) that are exhaled when their leaves are wrinkled.
Kyllinga squamulata exhals a lemon smell when crushed at the base
Kyllinga squamulata exhals a lemon smell when crushed at the base
Identification Keys for some Kyllinga spp.
| Species | Biological cycle | Underground system | Position of bracts |
Bracts Number Size |
Number of glomerules | Couleur of glomerules | Spikelets Size |
Glume Keel |
| Kyllinga brevifolia | vivacious |
Thin and slender rhizomes Base not bulbose |
Spread |
2-4 < 10 cm |
1 (-3) | Green | L 3-3,5 mm | white with green keel, scabrous towards the apex |
| Kyllinga bulbosa |
Thin and slender rhizomes Base bulbose |
3-4 10-15 cm |
1-3 | White | L 2,5-3 mm | |||
| Kyllinga erecta | Thick and short rhizomes | spread to reflected |
5-8 upto 25 cm |
1 | Pale green | L 3-3,5 mm |
spinulate mucronate |
|
| Kyllinga pumila | annual | No or very short rhizome | spread |
3-4 One much longer |
1-3 | L < 2,5 mm |
scabrous denticulate |
|
| Kyllinga squamulata | 3-4 | 1(-3) | Green or dark brown | L 2,7-4 mm |
winged, lobed tough |
|||
| Kyllinga tenuifolia | 3-4 | Whitish | L 3 mm |
glume top with mucro keel smooth |
||||
| Kyllinga odorata | reflected | 3-5 | 1-3 | Whitish green | L < 2,5 mm | smooth |
Thomas Le Bourgeois
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
Ecology
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Northern Cameroon: Kyllinga tenuifolia is characteristic of moist soils with a tendency to hydromorphy. It is particularly found on planosols or on clay-silty alluviums at the edge of rivers or in lowland areas. It is a minor weed but is a good indicator of silty soil with very wet clay-loam.
Thomas Le Bourgeois
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
No Data
📚 Habitat and Distribution
General Habitat
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Worldwide distribution
Kyllinga tenuifolia is present throughout tropical Africa, and also in India and Myanmar.
Kyllinga tenuifolia is present throughout tropical Africa, and also in India and Myanmar.
Thomas Le Bourgeois
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
No Data
📚 Occurrence
No Data
📚 Demography and Conservation
Risk Statement
Local harmfulness
Northern Cameroon: Kyllinga tenuifolia is a minor weed, very infrequent in annual rainfed crops of cotton rotation (cotton, maize, sorghum, groundnut), because they are little used on very wet soil.
Northern Cameroon: Kyllinga tenuifolia is a minor weed, very infrequent in annual rainfed crops of cotton rotation (cotton, maize, sorghum, groundnut), because they are little used on very wet soil.
Thomas Le Bourgeois
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
There is content in another language. Please click here to read it. (Français)
No Data
📚 Uses and Management
📚 Information Listing
Global Biodiversity Information Facility (GBIF)
Thomas Le Bourgeois
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
There is content in another language. Please click here to read it. (Français)
References
- Hutchinson J., Dalziel J. M., Keay R. W. J. & Hepper F. N., 1972. Flora of West Tropical Africa. Vol. III part. 2. 2ème éd. The Whitefriars Press ed., London & Tonbridge, 574p.
- Vanden Berghen C., 1982. Matériaux pour une flore de la végétation herbacée de la Casamance occidentale, Sénégal, Fascicule 1, Cyperaceae. Jardin Botanique National de Belgique, 40p.
- Le Bourgeois Th., 1993. Les mauvaises herbes dans la rotation cotonnière au Nord-Cameroun (Afrique) - Amplitude d'habitat et degré d'infestation - Cycle de développement. Thèse USTL Montpellier II, Montpellier, France, 241p.
- Le Bourgeois, T. and H. Merlier (1995). Adventrop - Les adventices d'Afrique soudano-sahélienne. Montpellier, France, Cirad.637p.
Information Listing > References
- Hutchinson J., Dalziel J. M., Keay R. W. J. & Hepper F. N., 1972. Flora of West Tropical Africa. Vol. III part. 2. 2ème éd. The Whitefriars Press ed., London & Tonbridge, 574p.
- Vanden Berghen C., 1982. Matériaux pour une flore de la végétation herbacée de la Casamance occidentale, Sénégal, Fascicule 1, Cyperaceae. Jardin Botanique National de Belgique, 40p.
- Le Bourgeois Th., 1993. Les mauvaises herbes dans la rotation cotonnière au Nord-Cameroun (Afrique) - Amplitude d'habitat et degré d'infestation - Cycle de développement. Thèse USTL Montpellier II, Montpellier, France, 241p.
- Le Bourgeois, T. and H. Merlier (1995). Adventrop - Les adventices d'Afrique soudano-sahélienne. Montpellier, France, Cirad.637p.
Images
Herbarium pictures ReCOLNAT: https://explore.recolnat.org/search/botanique/simplequery=Kyllinga%2520tenuifolia
Thomas Le Bourgeois
| Attributions | |
| 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 | Kyllinga |
| Species | Kyllinga tenuifolia Steud. |
📊 Temporal Distribution
📷 Related Observations
