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WIKTROP - Weed Identification and Knowledge in the Tropical and Mediterranean areas
WIKTROP - Weed Identification and Knowledge in the Tropical and Mediterranean areas
SpeciesMapsDocumentsIDAO

Aerva javanica (Burm.f.) C.Jussieu ex Schult.

Accepted
Aerva javanica (Burm.f.) C.Jussieu ex Schult.
Aerva javanica (Burm.f.) C.Jussieu ex Schult.
Aerva javanica (Burm.f.) C.Jussieu ex Schult.
Aerva javanica (Burm.f.) C.Jussieu ex Schult.
Aerva javanica (Burm.f.) C.Jussieu ex Schult.
Aerva javanica (Burm.f.) C.Jussieu ex Schult.
Aerva javanica (Burm.f.) C.Jussieu ex Schult.
Aerva javanica (Burm.f.) C.Jussieu ex Schult.
Aerva javanica (Burm.f.) C.Jussieu ex Schult.
Aerva javanica (Burm.f.) C.Jussieu ex Schult.
Aerva javanica (Burm.f.) C.Jussieu ex Schult.
Aerva javanica (Burm.f.) C.Jussieu ex Schult.
Aerva javanica (Burm.f.) C.Jussieu ex Schult.
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🗒 Synonyms
synonymAchyranthes alopecuroides Lam.
synonymAchyranthes incana Roxb.
synonymAchyranthes javanica (Burm.f.) Pers.
synonymAchyranthes lanceolata Zoll. & Moritzi ex Moq.
synonymAchyranthes persica (Burm.f.) Merr.
synonymAerva aegyptiaca J.F.Gmel.
synonymAerva alopecuroides (Lam.) Dum.Cours.
synonymAerva incana Mart.
synonymAerva javanica var. javanica
synonymAerva javanica var. latifolia Vahl
synonymAerva ovata Ehrenb. ex Schweinf.
synonymAerva persica (Burm.f.) Merr.
synonymAerva persica var. latifolia (Vahl) Maire
synonymAerva platyphylla Ehrenb. ex Schweinf.
synonymAerva suaveolens Edgew.
synonymAerva trichophylla Ehrenb. ex Schweinf.
synonymAerva wallichii Moq.
synonymCelosia lanata var. latifolia Vahl
synonymIllecebrum javanicum (Burm.f.) L.
synonymIllecebrum latifolium Steud.
synonymIllecebrum obcordatum Vahl ex Steud.
synonymIllecebrum tomentosum Moq.
synonymIresine javanica Burm.f.
synonymIresine persica Burm.f.
synonymUretia persica (Burm.f.) Kuntze
🗒 Common Names
English
  • Desert cotton, Kapok bush, Java aerva (USA)
Malagasy
  • Makosy, Volompotsy, Volofoty
📚 Overview
Overview
Brief
Code

AERJA

Growth form

broadleaf

Biological cycle

vivacious

Habitat

terrestrial

Wiktrop
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Arouna Seechurn
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    Diagnostic Keys
    Description

    Global description

    Aerva javanica is a perennial herb or a sub shrub with upright and branched stem , tomentose, whitish, 0.3 to 1.5 m high. The leaves are simple, alternate, shortly-stalked, woolly or sometimes glabrescent on mature leaves, size and shape are variable, obovate-lanceolate to lanceolate or almost linear. Inflorescences are axillary or terminal, in dense cylindrical, silky, white spikes, grouped in leafless panicles.  The flowers are small, wolly, with five tepals.  Seeds are small, lenticular, shiny, brown or black.

    General habit

    A. javanica is a white, woolly subshrub,  reaching 1.50m high.

    Underground system

    The root is a taproot

    Stem

    Stem erect, branched, ringed, tomentose, with stellate hairs and whitish branching ; stem tomentum consists of stellate and branched hairs.

    Leaves

    Leaves simple, alternate, obovate-lanceolate, lanceolate to linear or oblong, shortly-stalked, woolly and sometimes glabrescent on mature leaves. Lamina 3 to 5 cm long and 1 to 2 cm wide, base attenuated in an acute corner and apex rounded or wedged, mucronate; margin entire.  Both faces are woolly grayish green.

    Inflorescence

    Axillary or terminal inflorescences in dense cylindrical spikes, cream in colour, grouped in leafless panicles ; spikes of 3 to 8 cm long , with a diameter of 4 to 10 mm. Bracts ovate, acuminate, mucronate, tomentose.

    Flower

    Flowers small, usually polygamous ,with 5 tepals: 2 outer obovate-lanceolate, acuminate, 3 inner are narrower, obtuse. The stamens are fused at the base; Ovary subspherical with short style.

    Fruit

    The fruit is a utricle.

    Seed

    Small seeds, 0.9 to 1.25 mm in diameter, lenticular, shiny, black.

     

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      No Data
      📚 Natural History
      Life Cycle

      Life cycle

      Perenial
      Perenial

      Madagascar: Aerva javanica can flower and produce seeds all year.
      Morocco: Aerva javanica flowers after the rains in the Sahara.

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        Cyclicity

        Aerva javanica is a perennial plant that is propagated by seed. Small seeds produced in large quantities are dispersed by wind, animals and agricultural implements.

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          Morphology

          Type of prefoliation

          Leaf ratio medium
          Leaf ratio medium
          Broad leaves
          Broad leaves
          Narrow leaf
          Narrow leaf

          Latex

          Without latex
          Without latex

          Root type

          Taproot
          Taproot

          Stipule type

          No stipule
          No stipule

          Leaf attachment type

          sessile
          sessile
          with petiole
          with petiole

          Fruit type

          Capsule splitting horizontally
          Capsule splitting horizontally
          Capsule
          Capsule

          Lamina base

          attenuate
          attenuate

          Lamina margin

          hairy
          hairy
          entire
          entire

          Lamina apex

          attenuate
          attenuate
          acute
          acute

          Simple leaf type

          Lamina elliptic
          Lamina elliptic

          Inflorescence type

          Spike
          Spike
          Raceme with alternate sessile flowers
          Raceme with alternate sessile flowers

          Stem pilosity

          Dense hairy
          Dense hairy

          Stem hair type

          Wooly
          Wooly
          Pubescent
          Pubescent

          Life form

          Broadleaf plant
          Broadleaf plant
          Shrub
          Shrub
          Ecology

          Comoros: Absent
          Madagascar: Aerva javanica grows in more or less alluvial sandy soils and ferruginous soils called "red sands" of the coastal plains, of medium to low fertility. Agro-ecological zones of semiarid South and South-west plains of Madagascar. It is a plant of fallow, a ruderal species and weed of rainfed coastal plains in semi-arid zone (altitude less than 500 m), in sunny land. Weed of rainfed cropping systems such as cotton, cassava, corn and lima beans, cowpeas and groundnuts in a semi-intensive system without fertilization.
          Mauritius: Absent
          Morocco: Aerva javanica grows in the sandy, silty beds of desert wadis.
          Reunion: Absent

           

           
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            No Data
            📚 Habitat and Distribution
            Description

            Origin

            Areva javanica is native to North Africa.

            Worldwide distribution

            North Africa, West, Central and East, Middle East, Arabian Peninsula, India, Pakistan, Myanmar, Sri Lanka, Madagascar, Australia.

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              No Data
              📚 Occurrence
              No Data
              📚 Demography and Conservation
              Threats

              Local weediness

              Comoros: Absent.
              Madagascar: Aerva javanica is en infrequent and usually not abundant weed. Its control is not difficult in annual crops but it tends to form dense populations locally, dominant and troublesome in fallows on red sands. It can be locally abundant and interferes with soil preparation in fallow on reddish sands plains in the semiarid Southwest area (cropping systems based cotton and cassava).
              Maurice: Absent.
              Reunion: Absent.

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                No Data
                📚 Uses and Management
                Uses

                Food: The whole plant or the leaves can be eaten as a vegetable.

                Medicinal: Aerva javanica is used in traditional medicine to treat certain infectious diseases. The antibacterial and antifungal activities of methanol extracts of leaves of A. javanica confirm the use of this plant in traditional medicine (P. Srinivas Reddy and Ram S. 2012).

                Crafts: The fibers are used.

                Agronomy: Aerva javanica can be used to protect sandy soils against erosion.

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                  Management

                  Local Management


                  Comoros: Absent

                  Madagascar:  Control by cleaning and manual weeding (Southwest) in cropping systems based on cotton and cassava.

                  Maurice: Absent

                  Reunion: Absent

                  Wiktrop
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                    No Data
                    📚 Information Listing
                    References
                    1. CAVACO A. 1954. Flore de Madagascar et des Comores, fasc.67, p.37-38.
                    2. Plants of the World Online https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:59030-1
                    3. Mufti FU and al. 2012. Antimicrobial activities of Aerva javanica and Paeonia emodi plants Pak J Pharm Sci. 2012 Jul; 25(3):565-9.
                    4. The World Flora Online http://www.worldfloraonline.org/taxon/wfo-0000521761
                    5. CABANIS Y., CHABOUIS L. et CHABOUIS F. 1969. Végétaux et Groupements végétaux de Madagascar et des Mascareignes BDPA Agence de Madagascar Tome 2 p. 745-746.
                    6. Srinivas P. et Ram Reddy S. 2012. Screening for antibacterial principle and activity of Aerva javanica (Burm .f) Juss. ex Schult. Asian Pacific Journal of Tropical Biomedicine 2012, S838-S845.
                    7. Flora Maroccana (Dobignard A.) https://www.floramaroccana.fr/aerva-javanica.html
                    Information Listing > References
                    1. CAVACO A. 1954. Flore de Madagascar et des Comores, fasc.67, p.37-38.
                    2. Plants of the World Online https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:59030-1
                    3. Mufti FU and al. 2012. Antimicrobial activities of Aerva javanica and Paeonia emodi plants Pak J Pharm Sci. 2012 Jul; 25(3):565-9.
                    4. The World Flora Online http://www.worldfloraonline.org/taxon/wfo-0000521761
                    5. CABANIS Y., CHABOUIS L. et CHABOUIS F. 1969. Végétaux et Groupements végétaux de Madagascar et des Mascareignes BDPA Agence de Madagascar Tome 2 p. 745-746.
                    6. Srinivas P. et Ram Reddy S. 2012. Screening for antibacterial principle and activity of Aerva javanica (Burm .f) Juss. ex Schult. Asian Pacific Journal of Tropical Biomedicine 2012, S838-S845.
                    7. Flora Maroccana (Dobignard A.) https://www.floramaroccana.fr/aerva-javanica.html
                    Images
                    Thomas Le Bourgeois
                    Attributions
                    Contributors
                    StatusUNDER_CREATION
                    LicensesCC_BY
                    References
                      No Data
                      🐾 Taxonomy
                      📊 Temporal Distribution
                      📷 Related Observations
                      👥 Groups
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