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Bidens alba (L.) DC.
Family Name: | Asteraceae (Compositae) |
Synonyms: | Bidens pilosa var. radiata, Coreopsis alba |
Common Name: | Shepherd's Needles, Butterfly Needles, Hairy Beggarticks, Spanish Needles |
Name
Classifications and Characteristics
Plant Growth Form | Herbaceous Plant |
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Maximum Height | 0.3 m to 1.2 m |
Biogeography
Native Distribution | Tropical America |
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Native Habitat | Terrestrial (Disturbed Area / Open Ground) |
Preferred Climate Zone | Tropical |
Local Conservation Status | Non-native (Horticultural / Cultivated Only) |
Description and Ethnobotany
Growth Form | Perennial herb that grows up to 1.2 m tall. |
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Foliage | Juvenile leaves are simple and opposite, while mature leaves are compound and composed of 3 - 9 oval leaflets with serrate leaf margin. Leaves (2.5 - 12.7 cm long, 6.4 cm wide) are hairy on the underside. |
Stems | Stems are ridged. |
Flowers | Daisy-like, compound flowers (2.5 cm wide) are composed of 5 white ray florets (petal-like structures) and numerous yellow disk florets (in the middle). The ray florets are obovate with a scalloped tip and a pleated texture. |
Fruit | Fruits are composed of star-shaped clusters of thin, black, ribbed seeds. The needle-like seeds have 2 - 6 barbed hooks at the end. |
Fauna, Pollination and Dispersal
Fauna Pollination Dispersal Associated Fauna | Butterfly-Attracting (Flower Nectar) |
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Pollination Method(s) | Biotic (Fauna) |
Seed or Spore Dispersal | Biotic (Fauna) |
Plant Care and Propagation
Light Preference | Full Sun |
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Water Preference | Moderate Water |
Plant Growth Rate | Fast |
Maintenance Requirements | Low |
Potential Problems | It produces copious amounts of seeds that can quickly overtake a garden. |
Propagation Method | Seed |
Foliar
Foliage Retention | Evergreen |
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Mature Foliage Colour(s) | Green |
Mature Foliage Texture(s) | Hairy / Hirsute |
Prominent Young Flush Colour(s) | Green |
Foliar Type | Compound (Odd-Pinnate) |
Foliar Attachment to Stem | Petiolate |
Foliar Shape(s) | Non-Palm Foliage (Oval) |
Foliar Venation | Pinnate / Net |
Foliar Margin | Serrate / Toothed |
Foliar Apex - Tip | Acute |
Floral (Angiosperm)
Flower Colour(s) | Yellow / Golden, White |
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Flower Grouping | Cluster / Inflorescence |
Flower Location | Terminal |
Flower Symmetry | Radial |
Individual Flower Shape | Stellate / Star-shaped |
Inflorescence Type | Compound Head / Capitulum |
Flowering Period | Free-Flowering |
Flower Texture(s) Remarks | Pleated |
Flower Size | 2.5 cm |
Image Repository
Others
Master ID | 29307 |
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Species ID | 3616 |
Flora Disclaimer | The information in this website has been compiled from reliable sources, such as reference works on medicinal plants. It is not a substitute for medical advice or treatment and NParks does not purport to provide any medical advice. Readers should always consult his/her physician before using or consuming a plant for medicinal purposes. |