Key to Tasmanian Dicots
1. Muehlenbeckia gunnii showing the ochrea
2. *Polygonum arenastrum
3. Muehlenbeckia axillaris
4. *Polygonum arenastrum

* introduced species

The native Tasmanian Polygonaceae include Muehlenbeckia, which are woody climbers or prostrate shrubs, and a few species of small herbs. However, some introduced herbaceous species are very common weeds. These include Polygonum, Rumex and Emex species. The most characteristic feature of the family is that the leaves are alternate and each has a very distinctive stipule called an ochrea. This forms a membranous sheath around the stem. The flowers of these plants are small and inconspicuous.
Key to genera
© 2019 University of Tasmania

List of genera