Tropaeolum
| Tropaeolum | |
|---|---|
 |
|
| Tropaeolum majus | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Rosids |
| Order: | Brassicales |
| Family: | Tropaeolaceae |
| Genus: |
Tropaeolum L. |
| Species | |
|
About 80 species, see text. |
|
About 80 species, see text.
Tropaeolum /trəˈpiːələm, troʊ-/, commonly known as nasturtium (/nəˈstɜːrʃəm, næ-/; literally "nose-twister" or "nose-tweaker"), is a genus of roughly 80 species of annual and perennial herbaceous flowering plants. It was named by Carl Linnaeus in his book, Species Plantarum, and is the only genus in the family Tropaeolaceae. The nasturtiums received their common name because they produce an oil that is similar to that of watercress (Nasturtium officinale).
The genus Tropaeolum, native to South and Central America, includes several very popular garden plants, the most commonly grown being T. majus, T. peregrinum and T. speciosum. One of the hardiest species is T. polyphyllum from Chile, the perennial roots of which can survive the winter underground at altitudes of 3,300 metres (10,000 ft).
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