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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

Cyanotis lanata Benth.

Accepted
Cyanotis lanata Benth.
Cyanotis lanata Benth.
Cyanotis lanata Benth.
Cyanotis lanata Benth.
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🗒 Synonyms
synonymCyanotis lanata var. rubescens (A.Chev.) Schnell
synonymCyanotis lanata var. schweinfurthii (Hassk.) C.B.Clarke
synonymCyanotis lanata var. sublanata C.B.Clarke
synonymCyanotis pauciflora A.Rich.
synonymCyanotis rubescens A.Chev.
synonymCyanotis schweinfurthii Hassk.
synonymTonningia lanata (Benth.) Kuntze
synonymTonningia pauciflora (A.Rich.) Kuntze
synonymZygomenes pauciflora (A.Rich.) Hassk.
🗒 Common Names
No Data
📚 Overview
Overview
Brief
Code

CYBLA

Growth form

Broadleaf

Biological cycle

Annual

Habitat

Terrestrial

Thomas Le Bourgeois
Attributions
Contributors
Thomas Le Bourgeois
StatusUNDER_CREATION
LicensesCC_BY
References
    Diagnostic Keys
    Description
    Global description

    Cyanotis lanata has thick stems and leaves, quickly tinged with purple. The plant is covered with woolly hairs more or less dense. The flowers are solitary, in not very visible spathes grouped in terminal glomeruli. The stamens are grouped in bundles and bear long blue or purple hairs.

    Cotyledon

    The cotyledon is not visible because it remains in the seed.

    First leaves

    The first leaves have a linear lanceolate limb that fades at the base into a sheath covered with white, woolly hairs. The leaves are green, more or less covered with woolly hairs on the underside. The stem is purple in color.

    General habit

    Cyanotis lanata is erect. The plant sometimes grows into a single stem, but most often into a small branched bunch at the base. It measures 6 to 35 cm in height.

    Underground system

    The roots are fasciculate at the base of the plant. They are fibrous in nature.

    Stem

    The stem is erect, cylindrical and covered with woolly white hairs (some individuals may be almost hairless, however). The stem is crassulescent and strongly colored in purple by anthocyanin pigments.

    Leaf

    The leaves are alternate, of linear to lanceolate form. They are 3 to 7 mm wide and 5 to 8 cm long. They are thick and crassulescent. The upper and lower faces are provided with woolly white hairs more or less dense. The blade is provided with many parallel veins. The margin is undulating. The base of the blade weakens into a densely woolly sheath. The young leaves are green in color and blush as they age.

    Inflorescence

    The flowers are grouped into terminal glomeruli, bearing single flower spathes. The whole of the glomerulus is not very visible because of a dense entanglement of woolly hairs.

    Flower

    The sickle spathe is small (7 mm long). Only the upper part of the flower is visible, emerging from the spathe when it blossoms, between 7 and 10 o'clock in the morning. The three petals are similar, fused into a tube at the base of the corolla, rounded and free at the apex. They are blue, purple, pink or white. The stamens are grouped by 5 or 6 in bundle. They are 5-7 mm long and have long blue or purple hairs along the net and are surmounted by a bright yellow anther.

    Fruit

    The fruit is a dehiscent capsule with walls covered with long hairs. It is ovoid and is 3 mm high. It consists of three boxes and contains 5 or 6 seeds.

    Seed

    The seeds are pear-shaped, dark gray in color. Their surface is hollowed out by 2 or 3 deep transverse grooves. They are 1.5 mm long.

    Thomas Le Bourgeois
    Attributions
    Contributors
    StatusUNDER_CREATION
    LicensesCC_BY
    References
      No Data
      📚 Natural History
      Life Cycle
      Northern Cameroon: The germination of Cyanotis lanata occurs in July and August when rains become regular and abundant. The development cycle is fast. The first flowers appear in early August. The seeds are produced from September to November, until the drying of the plant at the beginning of the dry season.

       

      Thomas Le Bourgeois
      Attributions
      Contributors
      StatusUNDER_CREATION
      LicensesCC_BY
      References
        Cyclicity
        Cyanotis lanata is an annual plant. It multiplies only by seeds.
        Thomas Le Bourgeois
        Attributions
        Contributors
        StatusUNDER_CREATION
        LicensesCC_BY
        References
          Ecology
          Northern Cameroon: Cyanotis lanata occurs in a natural environment on a lateritic soil or on shallow soil with an underlying cuirass. In cultivated areas, it grows mainly on ferruginous soils or on degraded, shallow, fersialitic soils with dry soil conditions. These are usually plots with a flush lateritic breastplate. It is a species of Sudano-Sahelian region, whose annual rainfall is between 900 and 1200 mm. C. lanata is characteristic of sandy, shallow and acidic soils. It is particularly observed in traditional food crops such as groundnuts. In these situations, it is frequently associated with Commelina subulata.

           

          Thomas Le Bourgeois
          Attributions
          Contributors
          StatusUNDER_CREATION
          LicensesCC_BY
          References
            No Data
            📚 Habitat and Distribution
            General Habitat
            Worldwide distribution

            Cyanotis lanata is widely distributed in tropical Africa and South Africa.

            Thomas Le Bourgeois
            Attributions
            Contributors
            StatusUNDER_CREATION
            LicensesCC_BY
            References
              No Data
              📚 Occurrence
              No Data
              📚 Uses and Management
              📚 Information Listing
              References
              1. 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.
              2. Hutchinson J., Dalziel J. M., Keay R. W. J. & Hepper F. N., 1968. Flora of West Tropical Africa. Vol. III part. 1. 2ème éd. The Whitefriars Press ed., London & Tonbridge, 276p.
              3. Berhaut J., 1967. Flore du Sénégal. 2ème éd. Clairafrique éd., Dakar, Sénégal, 485p.
              4. Le Bourgeois, T. and H. Merlier (1995). Adventrop - Les adventices d'Afrique soudano-sahélienne. Montpellier, France, Cirad. 637p.
              Information Listing > References
              1. 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.
              2. Hutchinson J., Dalziel J. M., Keay R. W. J. & Hepper F. N., 1968. Flora of West Tropical Africa. Vol. III part. 1. 2ème éd. The Whitefriars Press ed., London & Tonbridge, 276p.
              3. Berhaut J., 1967. Flore du Sénégal. 2ème éd. Clairafrique éd., Dakar, Sénégal, 485p.
              4. Le Bourgeois, T. and H. Merlier (1995). Adventrop - Les adventices d'Afrique soudano-sahélienne. Montpellier, France, Cirad. 637p.
              Images
              Thomas Le Bourgeois
              Attributions
              Contributors
              StatusUNDER_CREATION
              LicensesCC_BY
              References
                No Data
                🐾 Taxonomy
                📊 Temporal Distribution
                📷 Related Observations
                👥 Groups
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