common dandelion

Taraxacum officinale

Summary 6

Taraxacum officinale, the common dandelion (often simply called "dandelion"), is a flowering herbaceous perennial plant of the family Asteraceae (Compositae). It can be found growing in temperate regions of the world, in lawns, on roadsides, on disturbed banks and shores of water ways, and other areas with moist soils. T. officinale is considered a weed, especially in lawns and along roadsides, but it is sometimes used as a medical herb and in food preparation. Common dandelion...

Description 7

Dandelions are well-known, robust weeds; the common name derives from the French 'dent de lion', meaning 'lion's tooth', which refers to the deeply toothed, deep green leaves (4), which are arranged in rosettes (5). The bright yellow flower heads are borne on hollow stalks (5), and the downy seed heads are familiar to children as dandelion clocks, which are used to 'tell the time' by the number of blows taken to remove the seeds (4). Vernacular names for the dandelion include 'wet-the-bed' and 'pissy-beds', which refer to the belief that just touching part of a dandelion can cause bed-wetting (4). As most British dandelions produce fruit without being fertilised (they are 'apomictic'), substantial problems arise with the taxonomy of these plants. This group is a 'complex' consisting of around 200 microspecies, and is typically treated as a species aggregate, denoted as 'Taraxacum officinale agg.' (1).

Sources and Credits

  1. (c) Dorota (Dorothy), some rights reserved (CC BY-SA), http://www.flickr.com/photos/92392149@N00/2446486568
  2. (c) Steven J. Baskauf, some rights reserved (CC BY-NC-SA), http://bioimages.vanderbilt.edu/gq/baskauf/gtaof--flclose-side12182.jpg
  3. (c) Valter Jacinto, some rights reserved (CC BY-NC-SA), https://s.yimg.com/pw/images/en-us/photo_unavailable_l.png
  4. (c) Zoya Akulova, some rights reserved (CC BY-NC), https://calphotos.berkeley.edu/imgs/512x768/0000_0000/0312/1912.jpeg
  5. Janice Carr, no known copyright restrictions (public domain), https://phil.cdc.gov/PHIL_Images/8796/8796_lores.jpg
  6. (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Taraxacum_officinale
  7. (c) Wildscreen, some rights reserved (CC BY-NC-SA), http://eol.org/data_objects/6690983

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