Code
AMMPR
Growth form
Boradleaf
Biological cycle
Annual
Habitat
Marshland
Ammannia prieureana Guill. & Per.
synonym | Ammannia archboldiana A. Fernandes |
synonym | Ammannia senegalensis f. patens Hiern |
No Data |
Global description
Ammania prieureana is an erect branched annual herb that grows to 60 cm tall. The leaves are linear lanceolate, opposite decussed. They are arranged in a horizontal plane and regularly staggered, auriculate at the base. The flowers are small, purple in color. They are grouped in short dense cymes in the axils of the leaves. The fruit is a capsule that contains many small seeds.
General habit
An erect annual branched herb up to 60 cm tall, fully hairless.
Underground system
The root is a taproot.
Stem
The main erect stem is of square section. It has secondary branches erect.
Leaf
The leaves are simple, opposite decussed, arranged in a horizontal plane. They are regularly spaced and staggered on the main stem and secondary branches. They are linear lanceolate, sessile, clearly auriculate at the base and acute corner at the top. Both sides are glabrous, the margin is entire, only one central vein marked.
Inflorescence
The flowers are grouped in small dense cymes located at the axils of the leaves and borne by a peduncle of 1-5 to 3 mm.
Flower
The flower is borne by a pedicel 1.5 to 3 mm long. It measures about 3 mm in diameter. The petals, 4 in circular form, are purple. The style is filiform, shorter than the ovary, 0.3 mm. The stamens are four in number.
Fruit
1.5 mm diameter capsule opening through a circular opening. It contains many seeds, small and without endosperm.
Attributions | |
Contributors | |
Status | UNDER_CREATION |
Licenses | CC_BY |
References |
Characters to distinguish several Ammannia species
Base of the lamina | Petals | Style | Peduncle | Fruit | Species |
Attenuate, truncate | Absent | Shorter than the ovary | 0-1 mm | 1-2 mm | A. baccifera |
Auriculate | Present | 1/2 as long as the ovary | 1-2 mm | 1,5 mm | A. multiflora |
Auriculate | Present | 1/2 to 1 as long as the ovary | 1,5-3 mm | 1,5 mm | A. prieureana |
Auriculate | Present | As long as or longer than the ovary | 6-18 mm | 2,5 - 3,5 mm | A. auriculata |
Auriculate | Present | As long as or longer than the ovary | 0-9 mm | 3,5 - 5 mm | A. coccinea |
Attributions | |
Contributors | |
Status | UNDER_CREATION |
Licenses | CC_BY |
References |
Worldwide distribution
Ammannia prieureana is present throughout tropical Africa.
Attributions | |
Contributors | |
Status | UNDER_CREATION |
Licenses | CC_BY |
References |
Local harmfulness
Burkina Faso: rare but abundant when it is present.
Ghana: frequent and scanty.
Mali: rare but abundant when it is present.
Senegal: frequent and scanty.
Attributions | |
Contributors | |
Status | UNDER_CREATION |
Licenses | CC_BY |
References |
Attributions | |
Contributors | |
Status | UNDER_CREATION |
Licenses | CC_BY |
References |
Attributions | |
Contributors | |
Status | UNDER_CREATION |
Licenses | CC_BY |
References |
- Johnson, D.E. 1997. Les adventices en riziculture en Afrique de l'Ouest. ADRAO/WARDA, Bouaké.
- Hutchinson, J., Dalziel, J.M., Keay, R.W.J., Hepper, F.N. 1954. Flora of west tropical africa. The Whitefriars Press, London & Tonbridge, Great Britain.
- Grard, P., et al. (2012). AFROweeds V.1.0: African weeds of rice Montpellier, France & Cotonou, Bénin, Cirad-AfricaRice eds.
- Johnson, D.E. 1997. Les adventices en riziculture en Afrique de l'Ouest. ADRAO/WARDA, Bouaké.
- Hutchinson, J., Dalziel, J.M., Keay, R.W.J., Hepper, F.N. 1954. Flora of west tropical africa. The Whitefriars Press, London & Tonbridge, Great Britain.
- Grard, P., et al. (2012). AFROweeds V.1.0: African weeds of rice Montpellier, France & Cotonou, Bénin, Cirad-AfricaRice eds.
Herbarium pictures ReCOLNAT: https://explore.recolnat.org/search/botanique/simplequery=Ammannia%2520prieuriana
Attributions | |
Contributors | |
Status | UNDER_CREATION |
Licenses | CC_BY |
References |
Root | Root |
Kingdom | Plantae |
Phylum | Tracheophyta |
Class | Magnoliopsida |
Order | Myrtales |
Family | Lythraceae |
Genus | Ammannia |
Species | Ammannia prieureana Guill. & Per. |