Cyclachen ( lat. Cyclachaena ) is a monotypic [2] genus of plants of the Asteraceae family. Includes a single species: Cyclachen Stigmata ( Cyclachaena xanthiifolia ).
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Content
Synonyms
- Cyclachaena pedicellata Rydb.
- Euphrosyne xanthiifolia ( Fresen. ) A.Gray
- Iva paniculata Nutt.
- Iva pedicellata ( Rydb. ) Cory
- Iva xanthiifolia Nutt. basionym
Botanical Description
An annual herbaceous plant. Flowers in small baskets, collected in panicle inflorescence. Marginal flowers in the basket are few, with an almost reduced perianth, female; median - tubular-bell-shaped, greenish-white, bisexual. Leaves are opposite, heart-ovate, serrated-serrated at the edges, rough from short bristly hairs above, grayish from the bottom of the thick silky-felt pubescence, with petioles. Plant height from 30 to 200 centimeters. The stem is straight, ribbed. Cyclagen blooms in July-October, pollen can cause allergic reactions. [3] Due to the indicated ability to cause allergic reactions, non-specialists often call Ambrosia , although it is very similar to it.
The Importance of Cyclagenes as a Weed
Like ragweed, cyclagen is rapidly growing and depleting the soil in cultivated crops, causing inhibition of seeded plants. To destroy cyclagen, it is enough to cut the plant under the root, but it is better to uproot the plant with the root.
Notes
- ↑ For the conventionality of specifying the class of dicotyledons as a superior taxon for the plant group described in this article, see the APG Systems section of the Dicotyledonous article .
- ↑ Strother JL 250. Cyclachaena Fresenius // Flora of North America: North of Mexico / Flora of North America Editorial Committee. - Oxford University Press, 2006. - T. 21: Magnoliophyta: Asteridae, Part 8: Asteraceae, Part 3. - P. 28. - 642 p. - ISBN 9780195305654 .
- ↑ http: //nature.rf/grasses/tsiklakhena.php Cyclagen
Literature
- Vinogradova Yu.K., Mayorov S.R., Khorun L.V. - M .: GEOS, 2009 .-- S. 161-169. - 494 p. - 800 copies. - ISBN 978-8-89119-487-9 .
- Gubanov I.A. et al. 1323. Cyclachaena xanthiifolia (Nutt.) Fresen. (Iva xanthiifolia Nutt.) - Cyclagena dulciferous // Illustrated identifier of plants in Central Russia. In 3 t . - M .: T-in scientific. ed. KMK, Institute of Technology. ISS., 2004. - T. 3. Angiosperms (dicotyledonous: dicotyledonous). - S. 359. - ISBN 5-87317-163-7 .
- Smolyaninova L.A. Cyclachaena xanthiifolia (Nutt.) Fresen. - Cyclagena stupid // Flora of the USSR : 30 tons / started at the hands of. and under chap. ed. V. L. Komarova . - M .; L .: Publishing House of the Academy of Sciences of the USSR , 1959. - T. 25 / ed. volumes B.K. Shishkin . - S. 515-517. - 630 s. - 2500 copies.
Links
- Cyclachaena daisy : information on a taxon in the Plantarium project (a identifier of plants and an illustrated atlas of species). (Retrieved August 25, 2012)
- Cyclachen - an article from the Great Soviet Encyclopedia .