Cardamine douglassii
| Cardamine douglassii | |
|---|---|
 | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| Family: | Brassicaceae |
| Genus: | Cardamine |
| Species: | C. douglassii |
| Binomial name | |
| Cardamine douglassii Britton | |
| Synonyms | |
Cardamine douglassii (known by the common names Limestone Bittercress and Purple Cress) is an angiosperm that produces white to pink or purple flowers in early spring. Cardamine douglassii is a perennial forb native to the eastern United States and Canada. It is listed as an endangered species by the state of Massachusetts, and as a species of special concern by the state of Connecticut.[2] In Virginia, it grows in habitats such as swamps and forests, generally with base rich soils.[3] Cardamine douglassii has an erect unbranched stem which is 10 to 25 centimeters tall, and sparsely to densely hairy. The basal leaves are simple, heart shaped or round, 5 to 15 centimeters, borne on 4 to 12 centimeter long petioles. There are 3 to 8 oblong to lanceolate leaves on the stem, which are 2 to 5 centimeters long and 5 to 25 millimeters wide. The margins may be smooth or coarsely toothed. The flowers are borne in a raceme. The petals are 7 to 15 millimeters long and 3 to 5 millimeters wide. The fruit is linear, 1.5 to 4 centimeters long and 1.5 to 2 millimeters wide. [4]
References
- ↑ "Cardamine douglasii Britton - The Plant List". Retrieved January 25 2014. The Plant List (2013). Version 1.1. Published on the Internet; http://www.theplantlist.org/
- ↑ "Plants Profile for Sericocarpus linifolius (narrowleaf whitetop aster)". Retrieved January 25 2014. USDA, NRCS. 2014. The PLANTS Database (http://plants.usda.gov). National Plant Data Team, Greensboro, NC 27401-4901 USA.
- ↑ "Digital Atlas of the Virginia Flora | Cardamine douglassii Britton". Retrieved January 25 2014. Virginia Botanical Associates. (2014). Digital Atlas of the Virginia Flora (http://www.vaplantatlas.org). c/o Virginia Botanical Associates, Blacksburg.
- ↑ "Cardamine douglassii in Flora of North America @ efloras.org". Retrieved January 30, 2014. 'eFloras (2008). Published on the Internet (http://www.efloras.org). Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.