|Flowers of the common chickweed|
[[File:Stellaria media MHNT.BOT.2008.1.33.jpg|thumb|Stellaria media - MHNfgr]
Stellaria media, chickweed, is a cool-season annual plant native to Europe, which is often eaten by chickens. It is sometimes called common chickweed to distinguish it from other plants called chickweed. Other common names include chickenwort, craches, maruns, winterweed. The plant germinates in fall or late winter, then forms large mats of foliage. Flowers are small and white, followed quickly by the seed pods. This plant flowers and sets seed at the same time.
Distribution and identification
Stellaria media is widespread in North America and Europe. There are several closely related plants referred to as chickweed, but which lack the culinary properties of plants in the genus Stellaria. Plants in the genus Cerastium are very similar in appearance to Stellaria and are in the same family (Carophyllaceae). Stellaria media can be easily distinguished from all other members of this family by examining the stems. Stellaria has fine hairs on only one side of the stem in a single band. Other members of the family Carophyllaceae which resemble Stellaria have hairs uniformly covering the entire stem.
The larvae of the European moth yellow shell (Camptogramma bilineata), of North American moths pale-banded dart (Agnorisma badinodis) or dusky cutworm (Agrotis venerabilis) or North American butterfly dainty sulphur (Nathalis iole) all feed on chickweed.
In both Europe and North America this plant is common in gardens, fields, and disturbed grounds. Control is difficult due to the heavy seed sets. Common Chickweed is very competitive with small grains, and can produce up to 80% yield losses among barley.
Stellaria media is delicious, edible and nutritious, and is used as a leaf vegetable, often raw in salads. It is one of the ingredients of the symbolic dish consumed in the Japanese spring-time festival, Nanakusa-no-sekku.
S. media contains plant chemicals known as saponins, which can be toxic when consumed in large quantities. Chickweed has been known to cause saponin poisoning in cattle. However, as the animal must consume several kilos of chickweed in order to reach a toxic level, such deaths are rare.
In folk medicine
The plant has medicinal purposes and is used in folk medicine. It has been used as a remedy to treat itchy skin conditions and pulmonary diseases. 17th century herbalist John Gerard recommended it as a remedy for mange. Modern herbalists mainly prescribe it for skin diseases, and also for bronchitis, rheumatic pains, arthritis and period pain. A poultice of chickweed can be applied to cuts, burns and bruises. Not all of these uses are supported by scientific evidence.
The anthraquinones emodin, parietin (physcion) and questin, the flavonoid kaempferol-3,7-O-α-L-dirhamnoside, the phytosterols β-sitosterol and daucosterol, and the fatty alcohol 1-hexacosanol can be found in S. media. Other flavonoid constituents are apigenin 6-C-beta-D-galactopyranosyl-8-C-alpha-L-arabinopyranoside, apigenin 6-C-alpha-L-arabinopyranosyl-8-C-beta-D-galactopyranoside, apigenin 6-C-beta-D-galactopyranosyl-8-C-beta-L-arabinopyranoside, apigenin 6-C-beta-D-glucopyranosyl-8-C-beta-D-galactopyranoside, apigenin 6, 8-di-C-alpha-L-arabinopyranoside. The plant also contains triterpenoid saponins of the hydroxylated oleanolic acid type and tannins (including phlobatannins). Proanthocyanidins are present in the testa of seeds.
- Neltje, Blanchan (2005). Wild Flowers Worth Knowing. Project Gutenberg Literary Archive Foundation.
- A. Davis, K. Renner, C. Sprague, L. Dyer, D. Mutch (2005). Integrated Weed Management. MSU.
- Stellaria media at Plants for a Future
- Hensel, Wolfgang (2008). Medicinal plants of Britain and Europe. London: A&C Black. ISBN 9781408101544.
- Howard, Michael (1987). Traditional folk remedies : a comprehensive herbal. London: Century. p. 119. ISBN 0-7126-1731-0.
- Studies on the Chemical Constituents From Stellaria media (II). Huang Yuan, Dong Qi, Qiao Shan-Yi, Pharmaceutical Journal of Chinese People's Liberation Army, 2007-03 (abstract) (Article in Chinese)
- Dong, Q; Huang, Y; Qiao, SY (2007). "Studies on chemical constituents from stellaria media. I". Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica (in Chinese) 32 (11): 1048–51. PMID 17672340.
- Hu, Y.M.; Wang, H.; Ye, W.C.; Qian, L. (2009). "New triterpenoid fromStellaria media(L.) Cyr". Natural Product Research 23 (14): 1274–8. doi:10.1080/14786410701642532. PMID 19735039.
- Weng, A; Thakur, M; Beceren-Braun, F; Gilabert-Oriol, R; Boettger, S; Melzig, MF; Fuchs, H (2012). "Synergistic interaction of triterpenoid saponins and plant protein toxins". Planta Medica 78 (11). doi:10.1055/s-0032-1320271.
- Böttger, Stefan; Melzig, Matthias F. (2011). "Triterpenoid saponins of the Caryophyllaceae and Illecebraceae family". Phytochemistry Letters 4 (2): 59. doi:10.1016/j.phytol.2010.08.003.
- Oyebanji (2011). "Phytochemistry and in vitro anti-oxidant activities of Stellaria media, Cajanus cajan and Tetracera potatoria methanolic extracts". Journal of Medicinal Plants Research 5 (30). doi:10.5897/JMPR11.246.
- Bittrich, V.; Amaral, Maria Do Carmo E. (1991). "Proanthocyanidins in the testa of centrospermous seeds". Biochemical Systematics and Ecology 19 (4): 319. doi:10.1016/0305-1978(91)90020-Z.
- Everitt, J.H.; Lonard, R.L.; Little, C.R. (2007). Weeds in South Texas and Northern Mexico. Lubbock: Texas Tech University Press. ISBN 0-89672-614-2
- Tilford, Gregory L. (1997). Edible and Medicinal Plants of the West. Mountain Press Publishing Company. ISBN 0-87842-359-1.
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|Wikiversity has bloom time data for Stellaria media on the Bloom Clock|