Spermacoce_stricta

<i>Spermacoce</i>

Spermacoce

Genus of plants

Spermacoce or false buttonweed[2] is a genus of flowering plants in the family Rubiaceae. It comprises about 275 species found throughout the tropics and subtropics.[3] Its highest diversity is found in the Americas, followed by Africa, Australia and Asia.

Quick Facts Spermacoce, Scientific classification ...

Description

The species are herbs or small shrubs with small- to medium-sized, four-lobed flowers arranged in capitate inflorescences. Some have a brightly coloured calyx and are eye-catching, particularly the Australian species. The corolla is variable in colour, often white, but also all shades of blue, pink and maroon. The fruit is usually a two-seeded capsule, sometimes a schizocarp or nut.[4]

Selected species

Spermacoce is a highly diverse genus with about 275 species in many tropical and subtropical places around the globe.[3] North American species include:[5][6]

References

  1. [1]
    "Spermacoce L." Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2023-03-18.
  2. [2]
    USDA, NRCS (n.d.). "Spermacoce". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 25 November 2015.
  3. [3]
    Kew World Checklist of Selected Plant Families
  4. [4]
    Davidse, G., M. Sousa Sánchez, S. Knapp & F. Chiang Cabrera. 2012. Rubiaceae a Verbenaceae. 4(2): i–xvi, 1–533. In G. Davidse, M. Sousa Sánchez, S. Knapp & F. Chiang Cabrera (eds.) Flora Mesoamericana. Missouri Botanical Garden Press, St. Louis.
  5. [5]
    Alftervista Flora of North America
  6. [6]
    Biota of North America Program
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