Horn herbs

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Horn herbs
Hornwort (Cerastium uniflorum)

Hornwort ( Cerastium uniflorum )

Systematics
Eudicotyledons
Nuclear eudicotyledons
Order : Clove-like (Caryophyllales)
Family : Carnation family (Caryophyllaceae)
Subfamily : Alsinoideae
Genre : Horn herbs
Scientific name
Cerastium
L.

Cerastium ( Cerastium ) constitute a genus within the family of Caryophyllaceae (Caryophyllaceae). The approximately 100 species are distributed almost worldwide and are mainly found in the temperate to cool areas of the northern hemisphere .

description

Illustration of the broad-leaved hornwort ( Cerastium latifolium ) from Atlas of the Alpine flora , plate 107
Capsule of common hornwort ( Cerastium fontanum subsp. Vulgare )
Illustration from Storm of Common Hornwort ( Cerastium fontanum subsp. Vulgare ) and Forest Hornwort ( Cerastium sylvaticum )
Common hornwort seeds ( Cerastium fontanum subsp. Vulgare )

Appearance and leaves

Chickweed species are usually one-year or perennial herbaceous plants . There are mostly thin taproots and, in the perennial species, often rhizomes that form roots at the nodes. The independently upright, ascending or lying, simple or branched stems are terete, often hairy and generally evenly leafed.

The leaves are opposite. The simple leaf blades are linear to elliptical or ovate.

Inflorescences and flowers

The flowers are seldom single, mostly in large numbers in mostly terminal, open or dense, zymous inflorescences (dichasias); in Cerastium axillare the inflorescences are lateral and racemose . The paired bracts are leaf-like or reduced, herbaceous or often with dry-skinned margins.

The hermaphrodite flowers are radially symmetrical and usually five-fold with a double flower envelope . The often deeply edged, white petals are characteristic of Cerastium species . Most of the five sepals are free. There are usually five styles, more rarely three, four or six.

The flower formula is:

Fruits and seeds

The name hornwort refers to the capsule fruits , which are usually curved like horns and which have twice as many teeth as pistils. The cylindrical or elongated and often curved capsule fruits contain numerous seeds. The seeds are spherical or kidney-shaped and flattened with a warty seed coat.

Occurrence

The genus Cerastium is distributed almost worldwide, but is particularly numerous in the temperate to cool areas of the northern hemisphere ( Eurasia and North America ). There are 23 species in China, nine of which are only there. There are 27 species in North America.

Some Cerastium species ( e.g. Cerastium subpilosum ) can be found at altitudes of 3900 meters.

Systematics

The genus Cerastium was established by Carl von Linné in Species Plantarum in 1753 , the diagnosis is in Genera Plantarum . The genus Cerastium is derived from the Greek ceras for horn and refers to the shape of the capsule fruit. A synonym for Cerastium L. is Provancheria B. Boivin . The genus Cerastium belongs to the tribe Alsineae in the subfamily Alsinoideae within the family Caryophyllaceae .

Alpine Hornwort ( Cerastium alpinum )
Field hornwort flowers ( Cerastium arvense )
Carinthian hornwort ( Cerastium carinthiacum )
Triple-fluted hornwort ( Cerastium cerastoides )
Inflorescence of common hornwort ( Cerastium fontanum subsp. Vulgare )
Inflorescence with five-fold flowers and flower buds of the hornwort ( Cerastium glomeratum )
Broad-leaved hornwort ( Cerastium latifolium )
Inflorescences of the hornwort ( Cerastium semidecandrum )
Habit, leaves and inflorescences of the felt hornwort ( Cerastium tomentosum )

There are about 100 species in the genus Cerastium (selection):

use

As rock garden plants and ground cover, felted hornwort ( Cerastium tomentosum ), but also Bieberstein hornwort ( Cerastium biebersteinii ), pure white hornwort ( Cerastium candidissimum ), field hornwort ( Cerastium arvense ) and large-flowered hornwort ( Cerastium grandiflorum ) are used.

literature

  • Manfred A. Fischer, Wolfgang Adler, Karl Oswald: Excursion flora for Austria, Liechtenstein and South Tyrol . 2nd, improved and enlarged edition. State of Upper Austria, Biology Center of the Upper Austrian State Museums, Linz 2005, ISBN 3-85474-140-5 .
  • Arvo Jaakko Juhani Jalas, Michael B. Wyse Jackson, Peter Derek Sell, FH Whitehead: Cerastium L. In: TG Tutin, NA Burges, AO Chater, JR Edmondson, VH Heywood, DM Moore, DH Valentine, SM Walters, DA Webb ( Ed.): Flora Europaea . 2nd, revised edition. Volume 1: Psilotaceae to Platanaceae . Cambridge University Press, Cambridge / New York / Melbourne 1993, ISBN 0-521-41007-X , pp. 164–175 (English, limited preview in Google Book Search).
  • Lu Dequan, John K. Morton: Cerastium Linnaeus. In: Wu Zhengyi, Peter H. Raven, Deyuan Hong (Eds.): Flora of China . Volume 6: Caryophyllaceae through Lardizabalaceae . Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 2001, ISBN 1-930723-05-9 , pp. 31 (English). , PDF file (sections description and systematics).
  • John K. Morton: Cerastium Linnaeus. In: Flora of North America Editorial Committee (Ed.): Flora of North America North of Mexico . Volume 5: Magnoliophyta: Caryophyllidae, part 2 . Oxford University Press, New York / Oxford a. a. 2005, ISBN 0-19-522211-3 , pp. 74–93 (English, limited preview in Google Book Search).
  • David Aeschimann, Konrad Lauber, Daniel Martin Moser, Jean-Paul Theurillat: Flora alpina. An atlas of all 4500 vascular plants in the Alps. Volume 1, Haupt, Bern / Stuttgart / Vienna 2004, ISBN 3-258-06600-0 , pp. 292–306.

Individual evidence

  1. a b c d e f g h i j k l m Lu Dequan, John K. Morton: Cerastium Linnaeus. In: Wu Zhengyi, Peter H. Raven, Deyuan Hong (Eds.): Flora of China . Volume 6: Caryophyllaceae through Lardizabalaceae . Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 2001, ISBN 1-930723-05-9 , pp. 31 (English). , PDF file .
  2. a b c d e f g h i j k l m n o p q John K. Morton: Cerastium Linnaeus. In: Flora of North America Editorial Committee (Ed.): Flora of North America North of Mexico . Volume 5: Magnoliophyta: Caryophyllidae, part 2 . Oxford University Press, New York / Oxford a. a. 2005, ISBN 0-19-522211-3 , pp. 74–93 (English, limited preview in Google Book Search).
  3. Carl von Linné: Species Plantarum. Volume 1, Lars Salvius, Stockholm 1753, p. 437, digitizedhttp: //vorlage_digitalisat.test/1%3Dhttp%3A%2F%2Fwww.biodiversitylibrary.org%2Fopenurl%3Fpid%3Dtitle%3A669%26volume%3D1%26issue%3D%26spage%3D437%26date%3D1753~GB%3D~ IA% 3D ~ MDZ% 3D% 0A ~ SZ% 3D ~ double-sided% 3D ~ LT% 3D ~ PUR% 3D
  4. Carl von Linné: Genera plantarum: eorumque characteres naturales secundum numerum, figuram, situm, et proportionem omnium fructificationis partium. Editio quinta. Lars Salvius, Stockholm 1754, p. 199, digitizedhttp: //vorlage_digitalisat.test/1%3Dhttp%3A%2F%2Fwww.biodiversitylibrary.org%2Fitem%2F14678%23page%2F234%2Fmode%2F1up~GB%3D~IA%3D~MDZ%3D%0A~SZ% 3D ~ double-sided% 3D ~ LT% 3D ~ PUR% 3D
  5. a b c d e f g h Cerastium in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved December 21, 2013.
  6. a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai aj ak al am an Karol Marhold: Caryophyllaceae. Cerastium. In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity. Berlin 2011.
  7. Hans-Christian Friedrich: Family Caryophyllaceae . Karl Heinz Rechinger (Hrsg.): Illustrated flora of Central Europe. Pteridophyta, Spermatophyta . Founded by Gustav Hegi. 2nd, completely revised edition. Volume III. Part 2: Angiospermae: Dicotyledones 1 (Phytolaccaceae - Portulacaceae) . Paul Parey, Berlin / Hamburg 1979, ISBN 3-489-60020-7 , pp. 911 (published in deliveries 1959–1979).
  8. a b c d Eckehart J. Jäger, Friedrich Ebel, Peter Hanelt, Gerd K. Müller (eds.): Exkursionsflora von Deutschland . Founded by Werner Rothmaler. tape 5 : Herbaceous ornamental and useful plants . Springer, Spektrum Akademischer Verlag, Berlin / Heidelberg 2008, ISBN 978-3-8274-0918-8 , pp. 183-184 .
  9. a b c d Werner Greuter, Niels Böhling, Ralf Jahn: The Cerastium scaposum group (Caryophyllaceae): three annual taxa endemic to Crete (Greece), two of them new. In: Willdenowia. Volume 32, No. 1, pp. 45-54, PDF file .
  10. Čedomil Šilić 1990: Endemične Biljke. Svjetlost, Sarajevo. Here p. 19
  11. Jaakko Jalas, Juha Suominen (ed.): Atlas Florae Europaeae. Distribution of Vascular Plants in Europe. 6. Caryophyllaceae (Alsinoideae and Paronychioideae). Akateeminen Kirjakauppa, The Committee for Mapping the Flora of Europe & Societas Biologica Fennica Vanamo, Helsinki 1983, ISBN 951-9108-05-X , p. 88.
  12. Caković D; Stešević D; Fair weather P; Frajman B (2018) Long neglected diversity in the Accursed Mountains of northern Albania: Cerastium hekuravense is genetically and morphologically divergent from C. dinaricum . Plant Syst Evol 304: 57-69
  13. ^ Manfred A. Fischer, Wolfgang Adler, Karl Oswald: Excursion flora for Austria, Liechtenstein and South Tyrol . 2nd, improved and enlarged edition. Province of Upper Austria, Biology Center of the Upper Austrian State Museums, Linz 2005, ISBN 3-85474-140-5 , p. 329 .
  14. ^ A b Shahina Ghazanfar: Flora of Pakistan 175: Caryophyllaceae. Department of Botany, University of Karachi, Karachi 1986, Cerastium , p. 35, HTML version at efloras.org.
  15. Jaakko Jalas, Juha Suominen (ed.): Atlas Florae Europaeae. Distribution of Vascular Plants in Europe. 6. Caryophyllaceae (Alsinoideae and Paronychioideae). Akateeminen Kirjakauppa, The Committee for Mapping the Flora of Europe & Societas Biologica Fennica Vanamo, Helsinki 1983, ISBN 951-9108-05-X , p. 100.
  16. Jaakko Jalas, Juha Suominen (ed.): Atlas Florae Europaeae. Distribution of Vascular Plants in Europe. 6. Caryophyllaceae (Alsinoideae and Paronychioideae). Akateeminen Kirjakauppa, The Committee for Mapping the Flora of Europe & Societas Biologica Fennica Vanamo, Helsinki 1983, ISBN 951-9108-05-X , p. 103.
  17. Jaakko Jalas, Juha Suominen (ed.): Atlas Florae Europaeae. Distribution of Vascular Plants in Europe. 6. Caryophyllaceae (Alsinoideae and Paronychioideae). Akateeminen Kirjakauppa, The Committee for Mapping the Flora of Europe & Societas Biologica Fennica Vanamo, Helsinki 1983, ISBN 951-9108-05-X , p. 101.
  18. Jaakko Jalas, Juha Suominen (ed.): Atlas Florae Europaeae. Distribution of Vascular Plants in Europe. 6. Caryophyllaceae (Alsinoideae and Paronychioideae). Akateeminen Kirjakauppa, The Committee for Mapping the Flora of Europe & Societas Biologica Fennica Vanamo, Helsinki 1983, ISBN 951-9108-05-X , p. 102.

Web links

Commons : Horn herbs ( Cerastium )  - Collection of images, videos and audio files