Code
ACCSE
Life form
Broadleaf
Biological cycle
Annual
Habitat
Terrestrial
ACCSE
Life form
Broadleaf
Biological cycle
Annual
Habitat
Terrestrial
🗒 Synonyms
| synonym | Acalypha gemina var. brevibracteata (Müll.Arg.) Müll.Arg. |
| synonym | Acalypha gemina var. exserta (Müll.Arg.) Müll.Arg. |
| synonym | Acalypha sessilis De Wild. & T.Durand, nom. illeg. |
| synonym | Acalypha sessilis var. brevibracteata Müll.Arg. |
| synonym | Acalypha sessilis var. exserta Müll.Arg. |
| synonym | Mercurialis cucullata Dinter ex Pax, pro syn. |
| synonym | Ricinocarpus segetalis (Müll.Arg.) Kuntze |
🗒 Common Names
| No Data |
📚 Overview
Description
Global description
Acalypha segetalis is an erect plant with alternate and simple leaves, long petiolate and toothed margin. The inflorescences are axillary spikes, bearing 2-4 female flowers inserted in broad leafy bracts with dentate and ciliate margins. The female flowers are distributed along the axis and above each of them is a small glomerulus of male flowers.
Cotyledons
The cotyledons are 9 mm long and 5 mm wide. They are obovate, truncate at the top and and petiolate. Their faces are hairless.
First leaves
The first leaves are simple and stalked. The limb is oval in shape, at the corner top. The margins are finely toothed. From the first leaves, the main vein and the secondary veins are visible.
General habit
The plant is erect. The plant develops in a main axis, more or less branched. It can measure up to 45 cm high.
Underground system
The root consists of a taproot, provided with fine secondary roots.
Stem
The stem is slightly pubescent, of quadrangular section, with longitudinally furrowed faces. In highly developed plants, it can be woody at the base.
Acalypha segetalis is an erect plant with alternate and simple leaves, long petiolate and toothed margin. The inflorescences are axillary spikes, bearing 2-4 female flowers inserted in broad leafy bracts with dentate and ciliate margins. The female flowers are distributed along the axis and above each of them is a small glomerulus of male flowers.
Cotyledons
The cotyledons are 9 mm long and 5 mm wide. They are obovate, truncate at the top and and petiolate. Their faces are hairless.
First leaves
The first leaves are simple and stalked. The limb is oval in shape, at the corner top. The margins are finely toothed. From the first leaves, the main vein and the secondary veins are visible.
General habit
The plant is erect. The plant develops in a main axis, more or less branched. It can measure up to 45 cm high.
Underground system
The root consists of a taproot, provided with fine secondary roots.
Stem
The stem is slightly pubescent, of quadrangular section, with longitudinally furrowed faces. In highly developed plants, it can be woody at the base.
Leaf
The leaves are alternate and simple. The blade, oval in shape, is 2 to 6 cm long and 1 to 3 cm wide. It is cunate at base and top and is attached by a petiole 2 to 7 cm long. The margin of the limb is toothed. The upper face is glabrous and the underside slightly pubescent along the veins. From the base of the limb, leave 3 to 5 conspicuous veins.
Inflorescence
The flowers are grouped into axillary inflorescences. Each inflorescence is an spike consisting of 2 to 4 female flowers each included in a leafy bract along the axis of the spike and small glomerul of 5 to 10 male flowers, located just above each female flower. The inflorescence is 1 to 2 cm long. The axis is pubescent.
Flower
The bracts surrounding the female flowers are triangular, rounded at the base. At the time of fruiting, the bract measures 10 to 13 mm long and wide. The toothed margin has 10 to 18 finely ciliated teeth. The outer surface of the bract is usually glabrous. The female flowers are reduced to a globular ovary with 3 cells, surmounted by a trifid style laciniated at the top. The male flowers are reduced to a calyx closed around the stamens. They measure 1 to 2 mm in diameter.
Fruit
The fruit is a capsule with 3 cells, of globular form, with pubescent walls at the top. It measures 2.5 mm in diameter. Each cell contains one seed.
Seed
The seed is ovoid and 2 mm long. It is light brown.
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
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Northern Cameroon: In cotton fields, Acalypha segetalis is present throughout the whole crop cycle, although it is more common at the beginning and especially in the middle of the cycle. Germination starts in May before plowing. This phase lasts until July. In the event of weeding or ridging, new emergence may occur until early August. The growing phase is short, since the first inflorescences appear 2 to 3 weeks after germination. Flowering is very important in July, then decreases and ends in September. In weeded plot, this phase is slightly delayed. The fructification occurs in July in non-weeded plot. It ends in November with drying out of the plants at the beginning of the dry season.
Thomas Le Bourgeois
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
Look Alikes
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Ecology
Northern Cameroon: Acalypha segetalis occurs from the Sahelo-Sudanian area to the Sudanian area with an annual rainfall of between 800 and 1,500 mm. It is more common in the Sudano-Sahelian region (annual rainfall of 1,100 mm). It has soil preferences much less strict than A. crenata. It grows on silty to clay soils such as fersialitic soils, vertisoils, lowland soils and alluvia with a neutral pH. It is found, although less frequently, on ferruginous acid 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
📚 Habitat and Distribution
General Habitat
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Worldwide distribution
Acalypha segetalis is widespread throughout tropical Africa.
Acalypha segetalis is widespread throughout tropical Africa.
Thomas Le Bourgeois
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
No Data
📚 Occurrence
No Data
📚 Demography and Conservation
Risk Statement
Local weediness
Northern Cameroon: In Northern Cameroon, Acalypha segetalis is present in 40% of cultivated plots but remains generally of low abundance.
Northern Cameroon: In Northern Cameroon, Acalypha segetalis is present in 40% of cultivated plots but remains generally of low abundance.
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
- Le Bourgeois, T. and H. Merlier (1995). Adventrop - Les adventices d'Afrique soudano-sahélienne. Montpellier, France, Cirad. 640 p.
- Hutchinson J., Dalziel J. M., Keay R. W. J. & Hepper F. N., 1958. Flora of West Tropical Africa. Vol. I part. 2. 2ème éd. The Whitefriars Press ed., London & Tonbridge, 828p.
- 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.
- Berhaut J., 1971. Flore illustrée du Sénégal. Tome 1. Clairafrique éd., Dakar, Sénégal, 626 p.
- Berhaut J., 1967. Flore du Sénégal. 2ème éd. Clairafrique éd., Dakar, Sénégal, 485p.
Information Listing > References
- Le Bourgeois, T. and H. Merlier (1995). Adventrop - Les adventices d'Afrique soudano-sahélienne. Montpellier, France, Cirad. 640 p.
- Hutchinson J., Dalziel J. M., Keay R. W. J. & Hepper F. N., 1958. Flora of West Tropical Africa. Vol. I part. 2. 2ème éd. The Whitefriars Press ed., London & Tonbridge, 828p.
- 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.
- Berhaut J., 1971. Flore illustrée du Sénégal. Tome 1. Clairafrique éd., Dakar, Sénégal, 626 p.
- Berhaut J., 1967. Flore du Sénégal. 2ème éd. Clairafrique éd., Dakar, Sénégal, 485p.
Images
Herbarium pictures ReCOLNAT: https://explore.recolnat.org/search/botanique/simplequery=Acalypha%2520segetalis
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 | Magnoliopsida |
| Order | Malpighiales |
| Family | Euphorbiaceae |
| Genus | Acalypha |
| Species | Acalypha segetalis Müll.Arg. |
📊 Temporal Distribution
📷 Related Observations
